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| <li>Nested | </li> |
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| <div class="subTitle">org.apache.hadoop.io</div> |
| <h2 title="Class Text" class="title">Class Text</h2> |
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| <ul class="inheritance"> |
| <li><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li> |
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| <li> |
| <ul class="inheritance"> |
| <li>org.apache.hadoop.io.Text</li> |
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| <dt>All Implemented Interfaces:</dt> |
| <dd><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Comparable.html?is-external=true" title="class or interface in java.lang">Comparable</a><<a href="../../../../org/apache/hadoop/io/BinaryComparable.html" title="class in org.apache.hadoop.io">BinaryComparable</a>>, <a href="../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</a>, <a href="../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable</a><<a href="../../../../org/apache/hadoop/io/BinaryComparable.html" title="class in org.apache.hadoop.io">BinaryComparable</a>></dd> |
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| <br> |
| <pre>@Stringable |
| @InterfaceAudience.Public |
| @InterfaceStability.Stable |
| public class <span class="typeNameLabel">Text</span> |
| extends <a href="../../../../org/apache/hadoop/io/BinaryComparable.html" title="class in org.apache.hadoop.io">BinaryComparable</a> |
| implements <a href="../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable</a><<a href="../../../../org/apache/hadoop/io/BinaryComparable.html" title="class in org.apache.hadoop.io">BinaryComparable</a>></pre> |
| <div class="block">This class stores text using standard UTF8 encoding. It provides methods |
| to serialize, deserialize, and compare texts at byte level. The type of |
| length is integer and is serialized using zero-compressed format. <p>In |
| addition, it provides methods for string traversal without converting the |
| byte array to a string. <p>Also includes utilities for |
| serializing/deserialing a string, coding/decoding a string, checking if a |
| byte array contains valid UTF8 code, calculating the length of an encoded |
| string.</div> |
| </li> |
| </ul> |
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| <caption><span>Fields</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Field and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/Text.html#DEFAULT_MAX_LEN">DEFAULT_MAX_LEN</a></span></code> </td> |
| </tr> |
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| <caption><span>Constructors</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colOne" scope="col">Constructor and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/Text.html#Text--">Text</a></span>()</code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/Text.html#Text-byte:A-">Text</a></span>(byte[] utf8)</code> |
| <div class="block">Construct from a byte array.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/Text.html#Text-java.lang.String-">Text</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> string)</code> |
| <div class="block">Construct from a string.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/Text.html#Text-org.apache.hadoop.io.Text-">Text</a></span>(<a href="../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</a> utf8)</code> |
| <div class="block">Construct from another text.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| <!-- ========== METHOD SUMMARY =========== --> |
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| </a> |
| <h3>Method Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> |
| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/Text.html#append-byte:A-int-int-">append</a></span>(byte[] utf8, |
| int start, |
| int len)</code> |
| <div class="block">Append a range of bytes to the end of the given text</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/Text.html#bytesToCodePoint-java.nio.ByteBuffer-">bytesToCodePoint</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio">ByteBuffer</a> bytes)</code> |
| <div class="block">Returns the next code point at the current position in |
| the buffer.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/Text.html#charAt-int-">charAt</a></span>(int position)</code> |
| <div class="block">Returns the Unicode Scalar Value (32-bit integer value) |
| for the character at <code>position</code>.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/Text.html#clear--">clear</a></span>()</code> |
| <div class="block">Clear the string to empty.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>byte[]</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/Text.html#copyBytes--">copyBytes</a></span>()</code> |
| <div class="block">Get a copy of the bytes that is exactly the length of the data.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/Text.html#decode-byte:A-">decode</a></span>(byte[] utf8)</code> |
| <div class="block">Converts the provided byte array to a String using the |
| UTF-8 encoding.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/Text.html#decode-byte:A-int-int-">decode</a></span>(byte[] utf8, |
| int start, |
| int length)</code> </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/Text.html#decode-byte:A-int-int-boolean-">decode</a></span>(byte[] utf8, |
| int start, |
| int length, |
| boolean replace)</code> |
| <div class="block">Converts the provided byte array to a String using the |
| UTF-8 encoding.</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio">ByteBuffer</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/Text.html#encode-java.lang.String-">encode</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> string)</code> |
| <div class="block">Converts the provided String to bytes using the |
| UTF-8 encoding.</div> |
| </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio">ByteBuffer</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/Text.html#encode-java.lang.String-boolean-">encode</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> string, |
| boolean replace)</code> |
| <div class="block">Converts the provided String to bytes using the |
| UTF-8 encoding.</div> |
| </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/Text.html#equals-java.lang.Object-">equals</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> o)</code> |
| <div class="block">Returns true iff <code>o</code> is a Text with the same contents.</div> |
| </td> |
| </tr> |
| <tr id="i11" class="rowColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/Text.html#find-java.lang.String-">find</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> what)</code> </td> |
| </tr> |
| <tr id="i12" class="altColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/Text.html#find-java.lang.String-int-">find</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> what, |
| int start)</code> |
| <div class="block">Finds any occurrence of <code>what</code> in the backing |
| buffer, starting as position <code>start</code>.</div> |
| </td> |
| </tr> |
| <tr id="i13" class="rowColor"> |
| <td class="colFirst"><code>byte[]</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/Text.html#getBytes--">getBytes</a></span>()</code> |
| <div class="block">Returns the raw bytes; however, only data up to <a href="../../../../org/apache/hadoop/io/Text.html#getLength--"><code>getLength()</code></a> is |
| valid.</div> |
| </td> |
| </tr> |
| <tr id="i14" class="altColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/Text.html#getLength--">getLength</a></span>()</code> |
| <div class="block">Returns the number of bytes in the byte array</div> |
| </td> |
| </tr> |
| <tr id="i15" class="rowColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/Text.html#hashCode--">hashCode</a></span>()</code> |
| <div class="block">Return a hash of the bytes returned from {#getBytes()}.</div> |
| </td> |
| </tr> |
| <tr id="i16" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/Text.html#readFields-java.io.DataInput-">readFields</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataInput.html?is-external=true" title="class or interface in java.io">DataInput</a> in)</code> |
| <div class="block">deserialize</div> |
| </td> |
| </tr> |
| <tr id="i17" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/Text.html#readFields-java.io.DataInput-int-">readFields</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataInput.html?is-external=true" title="class or interface in java.io">DataInput</a> in, |
| int maxLength)</code> </td> |
| </tr> |
| <tr id="i18" class="altColor"> |
| <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/Text.html#readString-java.io.DataInput-">readString</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataInput.html?is-external=true" title="class or interface in java.io">DataInput</a> in)</code> |
| <div class="block">Read a UTF8 encoded string from in</div> |
| </td> |
| </tr> |
| <tr id="i19" class="rowColor"> |
| <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/Text.html#readString-java.io.DataInput-int-">readString</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataInput.html?is-external=true" title="class or interface in java.io">DataInput</a> in, |
| int maxLength)</code> |
| <div class="block">Read a UTF8 encoded string with a maximum size</div> |
| </td> |
| </tr> |
| <tr id="i20" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/Text.html#readWithKnownLength-java.io.DataInput-int-">readWithKnownLength</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataInput.html?is-external=true" title="class or interface in java.io">DataInput</a> in, |
| int len)</code> |
| <div class="block">Read a Text object whose length is already known.</div> |
| </td> |
| </tr> |
| <tr id="i21" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/Text.html#set-byte:A-">set</a></span>(byte[] utf8)</code> |
| <div class="block">Set to a utf8 byte array</div> |
| </td> |
| </tr> |
| <tr id="i22" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/Text.html#set-byte:A-int-int-">set</a></span>(byte[] utf8, |
| int start, |
| int len)</code> |
| <div class="block">Set the Text to range of bytes</div> |
| </td> |
| </tr> |
| <tr id="i23" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/Text.html#set-java.lang.String-">set</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> string)</code> |
| <div class="block">Set to contain the contents of a string.</div> |
| </td> |
| </tr> |
| <tr id="i24" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/Text.html#set-org.apache.hadoop.io.Text-">set</a></span>(<a href="../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</a> other)</code> |
| <div class="block">copy a text.</div> |
| </td> |
| </tr> |
| <tr id="i25" class="rowColor"> |
| <td class="colFirst"><code>static void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/Text.html#skip-java.io.DataInput-">skip</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataInput.html?is-external=true" title="class or interface in java.io">DataInput</a> in)</code> |
| <div class="block">Skips over one Text in the input.</div> |
| </td> |
| </tr> |
| <tr id="i26" class="altColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/Text.html#toString--">toString</a></span>()</code> |
| <div class="block">Convert text back to string</div> |
| </td> |
| </tr> |
| <tr id="i27" class="rowColor"> |
| <td class="colFirst"><code>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/Text.html#utf8Length-java.lang.String-">utf8Length</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> string)</code> |
| <div class="block">For the given string, returns the number of UTF-8 bytes |
| required to encode the string.</div> |
| </td> |
| </tr> |
| <tr id="i28" class="altColor"> |
| <td class="colFirst"><code>static void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/Text.html#validateUTF8-byte:A-">validateUTF8</a></span>(byte[] utf8)</code> |
| <div class="block">Check if a byte array contains valid utf-8</div> |
| </td> |
| </tr> |
| <tr id="i29" class="rowColor"> |
| <td class="colFirst"><code>static void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/Text.html#validateUTF8-byte:A-int-int-">validateUTF8</a></span>(byte[] utf8, |
| int start, |
| int len)</code> |
| <div class="block">Check to see if a byte array is valid utf-8</div> |
| </td> |
| </tr> |
| <tr id="i30" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/Text.html#write-java.io.DataOutput-">write</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutput.html?is-external=true" title="class or interface in java.io">DataOutput</a> out)</code> |
| <div class="block">serialize |
| write this object to out |
| length uses zero-compressed encoding</div> |
| </td> |
| </tr> |
| <tr id="i31" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/Text.html#write-java.io.DataOutput-int-">write</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutput.html?is-external=true" title="class or interface in java.io">DataOutput</a> out, |
| int maxLength)</code> </td> |
| </tr> |
| <tr id="i32" class="altColor"> |
| <td class="colFirst"><code>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/Text.html#writeString-java.io.DataOutput-java.lang.String-">writeString</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutput.html?is-external=true" title="class or interface in java.io">DataOutput</a> out, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> s)</code> |
| <div class="block">Write a UTF8 encoded string to out</div> |
| </td> |
| </tr> |
| <tr id="i33" class="rowColor"> |
| <td class="colFirst"><code>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/Text.html#writeString-java.io.DataOutput-java.lang.String-int-">writeString</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutput.html?is-external=true" title="class or interface in java.io">DataOutput</a> out, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> s, |
| int maxLength)</code> |
| <div class="block">Write a UTF8 encoded string with a maximum size to out</div> |
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| <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Comparable.html?is-external=true#compareTo-T-" title="class or interface in java.lang">compareTo</a></code></li> |
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| <div class="details"> |
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| <!-- ============ FIELD DETAIL =========== --> |
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| <h3>Field Detail</h3> |
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| <dd><a href="../../../../constant-values.html#org.apache.hadoop.io.Text.DEFAULT_MAX_LEN">Constant Field Values</a></dd> |
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| <h4>Text</h4> |
| <pre>public Text()</pre> |
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| <h4>Text</h4> |
| <pre>public Text(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> string)</pre> |
| <div class="block">Construct from a string.</div> |
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| <a name="Text-org.apache.hadoop.io.Text-"> |
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| <ul class="blockList"> |
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| <h4>Text</h4> |
| <pre>public Text(<a href="../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</a> utf8)</pre> |
| <div class="block">Construct from another text.</div> |
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| <h4>Text</h4> |
| <pre>public Text(byte[] utf8)</pre> |
| <div class="block">Construct from a byte array.</div> |
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| <h4>copyBytes</h4> |
| <pre>public byte[] copyBytes()</pre> |
| <div class="block">Get a copy of the bytes that is exactly the length of the data. |
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| <h4>getBytes</h4> |
| <pre>public byte[] getBytes()</pre> |
| <div class="block">Returns the raw bytes; however, only data up to <a href="../../../../org/apache/hadoop/io/Text.html#getLength--"><code>getLength()</code></a> is |
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| need the returned array to be precisely the length of the data.</div> |
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| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../org/apache/hadoop/io/BinaryComparable.html#getBytes--">getBytes</a></code> in class <code><a href="../../../../org/apache/hadoop/io/BinaryComparable.html" title="class in org.apache.hadoop.io">BinaryComparable</a></code></dd> |
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| <h4>getLength</h4> |
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| <div class="block">Returns the number of bytes in the byte array</div> |
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| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../org/apache/hadoop/io/BinaryComparable.html#getLength--">getLength</a></code> in class <code><a href="../../../../org/apache/hadoop/io/BinaryComparable.html" title="class in org.apache.hadoop.io">BinaryComparable</a></code></dd> |
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| <li class="blockList"> |
| <h4>charAt</h4> |
| <pre>public int charAt(int position)</pre> |
| <div class="block">Returns the Unicode Scalar Value (32-bit integer value) |
| for the character at <code>position</code>. Note that this |
| method avoids using the converter or doing String instantiation</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the Unicode scalar value at position or -1 |
| if the position is invalid or points to a |
| trailing byte</dd> |
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| <a name="find-java.lang.String-"> |
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| <h4>find</h4> |
| <pre>public int find(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> what)</pre> |
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| <a name="find-java.lang.String-int-"> |
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| <pre>public int find(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> what, |
| int start)</pre> |
| <div class="block">Finds any occurrence of <code>what</code> in the backing |
| buffer, starting as position <code>start</code>. The starting |
| position is measured in bytes and the return value is in |
| terms of byte position in the buffer. The backing buffer is |
| not converted to a string for this operation.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>byte position of the first occurrence of the search |
| string in the UTF-8 buffer or -1 if not found</dd> |
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| <a name="set-java.lang.String-"> |
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| <h4>set</h4> |
| <pre>public void set(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> string)</pre> |
| <div class="block">Set to contain the contents of a string.</div> |
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| <h4>set</h4> |
| <pre>public void set(byte[] utf8)</pre> |
| <div class="block">Set to a utf8 byte array</div> |
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| <h4>set</h4> |
| <pre>public void set(<a href="../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</a> other)</pre> |
| <div class="block">copy a text.</div> |
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| <h4>set</h4> |
| <pre>public void set(byte[] utf8, |
| int start, |
| int len)</pre> |
| <div class="block">Set the Text to range of bytes</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>utf8</code> - the data to copy from</dd> |
| <dd><code>start</code> - the first position of the new string</dd> |
| <dd><code>len</code> - the number of bytes of the new string</dd> |
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| <h4>append</h4> |
| <pre>public void append(byte[] utf8, |
| int start, |
| int len)</pre> |
| <div class="block">Append a range of bytes to the end of the given text</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>utf8</code> - the data to copy from</dd> |
| <dd><code>start</code> - the first position to append from utf8</dd> |
| <dd><code>len</code> - the number of bytes to append</dd> |
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| <h4>clear</h4> |
| <pre>public void clear()</pre> |
| <div class="block">Clear the string to empty. |
| |
| <em>Note</em>: For performance reasons, this call does not clear the |
| underlying byte array that is retrievable via <a href="../../../../org/apache/hadoop/io/Text.html#getBytes--"><code>getBytes()</code></a>. |
| In order to free the byte-array memory, call <a href="../../../../org/apache/hadoop/io/Text.html#set-byte:A-"><code>set(byte[])</code></a> |
| with an empty byte array (For example, <code>new byte[0]</code>).</div> |
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| <div class="block">Convert text back to string</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a></code> in class <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></code></dd> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang"><code>Object.toString()</code></a></dd> |
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| <h4>readFields</h4> |
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| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <div class="block">deserialize</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../org/apache/hadoop/io/Writable.html#readFields-java.io.DataInput-">readFields</a></code> in interface <code><a href="../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>in</code> - <code>DataInput</code> to deseriablize this object from.</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
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| <h4>readFields</h4> |
| <pre>public void readFields(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataInput.html?is-external=true" title="class or interface in java.io">DataInput</a> in, |
| int maxLength) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="skip-java.io.DataInput-"> |
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| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>skip</h4> |
| <pre>public static void skip(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataInput.html?is-external=true" title="class or interface in java.io">DataInput</a> in) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <div class="block">Skips over one Text in the input.</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
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| <h4>readWithKnownLength</h4> |
| <pre>public void readWithKnownLength(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataInput.html?is-external=true" title="class or interface in java.io">DataInput</a> in, |
| int len) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <div class="block">Read a Text object whose length is already known. |
| This allows creating Text from a stream which uses a different serialization |
| format.</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
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| <h4>write</h4> |
| <pre>public void write(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutput.html?is-external=true" title="class or interface in java.io">DataOutput</a> out) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <div class="block">serialize |
| write this object to out |
| length uses zero-compressed encoding</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../org/apache/hadoop/io/Writable.html#write-java.io.DataOutput-">write</a></code> in interface <code><a href="../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>out</code> - <code>DataOuput</code> to serialize this object into.</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../org/apache/hadoop/io/Writable.html#write-java.io.DataOutput-"><code>Writable.write(DataOutput)</code></a></dd> |
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| <a name="write-java.io.DataOutput-int-"> |
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| <h4>write</h4> |
| <pre>public void write(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutput.html?is-external=true" title="class or interface in java.io">DataOutput</a> out, |
| int maxLength) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
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| <pre>public boolean equals(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> o)</pre> |
| <div class="block">Returns true iff <code>o</code> is a Text with the same contents.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="../../../../org/apache/hadoop/io/BinaryComparable.html#equals-java.lang.Object-">equals</a></code> in class <code><a href="../../../../org/apache/hadoop/io/BinaryComparable.html" title="class in org.apache.hadoop.io">BinaryComparable</a></code></dd> |
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| <pre>public int hashCode()</pre> |
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| <div class="block">Return a hash of the bytes returned from {#getBytes()}.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="../../../../org/apache/hadoop/io/BinaryComparable.html#hashCode--">hashCode</a></code> in class <code><a href="../../../../org/apache/hadoop/io/BinaryComparable.html" title="class in org.apache.hadoop.io">BinaryComparable</a></code></dd> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../org/apache/hadoop/io/WritableComparator.html#hashBytes-byte:A-int-"><code>WritableComparator.hashBytes(byte[],int)</code></a></dd> |
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| <pre>public static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> decode(byte[] utf8) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/nio/charset/CharacterCodingException.html?is-external=true" title="class or interface in java.nio.charset">CharacterCodingException</a></pre> |
| <div class="block">Converts the provided byte array to a String using the |
| UTF-8 encoding. If the input is malformed, |
| replace by a default value.</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/nio/charset/CharacterCodingException.html?is-external=true" title="class or interface in java.nio.charset">CharacterCodingException</a></code></dd> |
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| <pre>public static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> decode(byte[] utf8, |
| int start, |
| int length) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/nio/charset/CharacterCodingException.html?is-external=true" title="class or interface in java.nio.charset">CharacterCodingException</a></pre> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/nio/charset/CharacterCodingException.html?is-external=true" title="class or interface in java.nio.charset">CharacterCodingException</a></code></dd> |
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| <pre>public static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> decode(byte[] utf8, |
| int start, |
| int length, |
| boolean replace) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/nio/charset/CharacterCodingException.html?is-external=true" title="class or interface in java.nio.charset">CharacterCodingException</a></pre> |
| <div class="block">Converts the provided byte array to a String using the |
| UTF-8 encoding. If <code>replace</code> is true, then |
| malformed input is replaced with the |
| substitution character, which is U+FFFD. Otherwise the |
| method throws a MalformedInputException.</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/nio/charset/CharacterCodingException.html?is-external=true" title="class or interface in java.nio.charset">CharacterCodingException</a></code></dd> |
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| <h4>encode</h4> |
| <pre>public static <a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio">ByteBuffer</a> encode(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> string) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/nio/charset/CharacterCodingException.html?is-external=true" title="class or interface in java.nio.charset">CharacterCodingException</a></pre> |
| <div class="block">Converts the provided String to bytes using the |
| UTF-8 encoding. If the input is malformed, |
| invalid chars are replaced by a default value.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>ByteBuffer: bytes stores at ByteBuffer.array() |
| and length is ByteBuffer.limit()</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/nio/charset/CharacterCodingException.html?is-external=true" title="class or interface in java.nio.charset">CharacterCodingException</a></code></dd> |
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| <pre>public static <a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio">ByteBuffer</a> encode(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> string, |
| boolean replace) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/nio/charset/CharacterCodingException.html?is-external=true" title="class or interface in java.nio.charset">CharacterCodingException</a></pre> |
| <div class="block">Converts the provided String to bytes using the |
| UTF-8 encoding. If <code>replace</code> is true, then |
| malformed input is replaced with the |
| substitution character, which is U+FFFD. Otherwise the |
| method throws a MalformedInputException.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>ByteBuffer: bytes stores at ByteBuffer.array() |
| and length is ByteBuffer.limit()</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/nio/charset/CharacterCodingException.html?is-external=true" title="class or interface in java.nio.charset">CharacterCodingException</a></code></dd> |
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| <h4>readString</h4> |
| <pre>public static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> readString(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataInput.html?is-external=true" title="class or interface in java.io">DataInput</a> in) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <div class="block">Read a UTF8 encoded string from in</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
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| <h4>readString</h4> |
| <pre>public static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> readString(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataInput.html?is-external=true" title="class or interface in java.io">DataInput</a> in, |
| int maxLength) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <div class="block">Read a UTF8 encoded string with a maximum size</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
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| <h4>writeString</h4> |
| <pre>public static int writeString(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutput.html?is-external=true" title="class or interface in java.io">DataOutput</a> out, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> s) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <div class="block">Write a UTF8 encoded string to out</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
| </dl> |
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| <h4>writeString</h4> |
| <pre>public static int writeString(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutput.html?is-external=true" title="class or interface in java.io">DataOutput</a> out, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> s, |
| int maxLength) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <div class="block">Write a UTF8 encoded string with a maximum size to out</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
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| <h4>validateUTF8</h4> |
| <pre>public static void validateUTF8(byte[] utf8) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/nio/charset/MalformedInputException.html?is-external=true" title="class or interface in java.nio.charset">MalformedInputException</a></pre> |
| <div class="block">Check if a byte array contains valid utf-8</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>utf8</code> - byte array</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/nio/charset/MalformedInputException.html?is-external=true" title="class or interface in java.nio.charset">MalformedInputException</a></code> - if the byte array contains invalid utf-8</dd> |
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| <h4>validateUTF8</h4> |
| <pre>public static void validateUTF8(byte[] utf8, |
| int start, |
| int len) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/nio/charset/MalformedInputException.html?is-external=true" title="class or interface in java.nio.charset">MalformedInputException</a></pre> |
| <div class="block">Check to see if a byte array is valid utf-8</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>utf8</code> - the array of bytes</dd> |
| <dd><code>start</code> - the offset of the first byte in the array</dd> |
| <dd><code>len</code> - the length of the byte sequence</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/nio/charset/MalformedInputException.html?is-external=true" title="class or interface in java.nio.charset">MalformedInputException</a></code> - if the byte array contains invalid bytes</dd> |
| </dl> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>bytesToCodePoint</h4> |
| <pre>public static int bytesToCodePoint(<a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio">ByteBuffer</a> bytes)</pre> |
| <div class="block">Returns the next code point at the current position in |
| the buffer. The buffer's position will be incremented. |
| Any mark set on this buffer will be changed by this method!</div> |
| </li> |
| </ul> |
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| <h4>utf8Length</h4> |
| <pre>public static int utf8Length(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> string)</pre> |
| <div class="block">For the given string, returns the number of UTF-8 bytes |
| required to encode the string.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>string</code> - text to encode</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>number of UTF-8 bytes required to encode</dd> |
| </dl> |
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