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 <h2 title="Class ArrayStack" class="title">Class ArrayStack</h2>
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 <pre>public class <span class="typeNameLabel">ArrayStack</span>
 extends <a href="https://docs.oracle.com/javase/7/docs/api/java/util/ArrayList.html?is-external=true" title="class or interface in java.util" class="externalLink">ArrayList</a></pre>
 <div class="block">An implementation of the <a href="https://docs.oracle.com/javase/7/docs/api/java/util/Stack.html?is-external=true" title="class or interface in java.util" class="externalLink"><code>Stack</code></a> API that is based on an <code>ArrayList</code>
  instead of a <code>Vector</code>, so it is not synchronized to protect against multi-threaded
  access.  The implementation is therefore operates faster in environments where you do not need to
  worry about multiple thread contention.
  <p/>
  The removal order of an <code>ArrayStack</code> is based on insertion order: The most recently
  added element is removed first.  The iteration order is <i>not</i> the same as the removal order.
   The iterator returns elements from the bottom up, whereas the <a href="#remove()"><code>remove()</code></a> method removes
  them from the top down.
  <p/>
  Unlike <code>Stack</code>, <code>ArrayStack</code> accepts null entries.</div>
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 <dd><a href="../../../../serialized-form.html#org.apache.axis2.util.ArrayStack">Serialized Form</a></dd>
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 <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E()">ArrayStack</a></span>()</code></th>
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 <div class="block">Constructs a new empty <code>ArrayStack</code>.</div>
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 <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(int)">ArrayStack</a></span>&#8203;(int&nbsp;initialSize)</code></th>
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 <div class="block">Constructs a new empty <code>ArrayStack</code> with an initial size.</div>
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 <th class="colFirst" scope="col">Modifier and Type</th>
 <th class="colSecond" scope="col">Method</th>
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 <div class="block">Return <code>true</code> if this stack is currently empty.</div>
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 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#get()">get</a></span>()</code></th>
 <td class="colLast">
 <div class="block">Returns the element on the top of the stack.</div>
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 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#peek()">peek</a></span>()</code></th>
 <td class="colLast">
 <div class="block">Returns the top item off of this stack without removing it.</div>
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 <tr id="i3" class="rowColor">
 <td class="colFirst"><code><a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#peek(int)">peek</a></span>&#8203;(int&nbsp;n)</code></th>
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 <div class="block">Returns the n'th item down (zero-relative) from the top of this stack without removing it.</div>
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 <div class="block">Pops the top item off of this stack and return it.</div>
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 <td class="colFirst"><code><a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#push(java.lang.Object)">push</a></span>&#8203;(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;item)</code></th>
 <td class="colLast">
 <div class="block">Pushes a new item onto the top of this stack.</div>
 </td>
 </tr>
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 <td class="colFirst"><code><a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a></code></td>
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 <td class="colLast">
 <div class="block">Removes the element on the top of the stack.</div>
 </td>
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 <td class="colFirst"><code>int</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#search(java.lang.Object)">search</a></span>&#8203;(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;object)</code></th>
 <td class="colLast">
 <div class="block">Returns the one-based position of the distance from the top that the specified object exists
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 <code><a href="https://docs.oracle.com/javase/7/docs/api/java/util/List.html?is-external=true#containsAll(java.util.Collection)" title="class or interface in java.util" class="externalLink">containsAll</a></code></li>
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 <pre>public&nbsp;ArrayStack()</pre>
 <div class="block">Constructs a new empty <code>ArrayStack</code>. The initial size is controlled by
  <code>ArrayList</code> and is currently 10.</div>
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 <pre>public&nbsp;ArrayStack&#8203;(int&nbsp;initialSize)</pre>
 <div class="block">Constructs a new empty <code>ArrayStack</code> with an initial size.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>initialSize</code> - the initial size to use</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/7/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang" class="externalLink">IllegalArgumentException</a></code> - if the specified initial size is negative</dd>
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 <pre class="methodSignature">public&nbsp;boolean&nbsp;empty()</pre>
 <div class="block">Return <code>true</code> if this stack is currently empty.
  <p/>
  This method exists for compatibility with <code>java.util.Stack</code>. New users of this
  class should use <code>isEmpty</code> instead.</div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>true if the stack is currently empty</dd>
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 <pre class="methodSignature">public&nbsp;<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;peek()
             throws <a href="https://docs.oracle.com/javase/7/docs/api/java/util/EmptyStackException.html?is-external=true" title="class or interface in java.util" class="externalLink">EmptyStackException</a></pre>
 <div class="block">Returns the top item off of this stack without removing it.</div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the top item on the stack</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/7/docs/api/java/util/EmptyStackException.html?is-external=true" title="class or interface in java.util" class="externalLink">EmptyStackException</a></code> - if the stack is empty</dd>
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             throws <a href="https://docs.oracle.com/javase/7/docs/api/java/util/EmptyStackException.html?is-external=true" title="class or interface in java.util" class="externalLink">EmptyStackException</a></pre>
 <div class="block">Returns the n'th item down (zero-relative) from the top of this stack without removing it.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>n</code> - the number of items down to go</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the n'th item on the stack, zero relative</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/7/docs/api/java/util/EmptyStackException.html?is-external=true" title="class or interface in java.util" class="externalLink">EmptyStackException</a></code> - if there are not enough items on the stack to satisfy this
                              request</dd>
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 <pre class="methodSignature">public&nbsp;<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;pop()
            throws <a href="https://docs.oracle.com/javase/7/docs/api/java/util/EmptyStackException.html?is-external=true" title="class or interface in java.util" class="externalLink">EmptyStackException</a></pre>
 <div class="block">Pops the top item off of this stack and return it.</div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the top item on the stack</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/7/docs/api/java/util/EmptyStackException.html?is-external=true" title="class or interface in java.util" class="externalLink">EmptyStackException</a></code> - if the stack is empty</dd>
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 <pre class="methodSignature">public&nbsp;<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;push&#8203;(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;item)</pre>
 <div class="block">Pushes a new item onto the top of this stack. The pushed item is also returned. This is
  equivalent to calling <code>add</code>.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>item</code> - the item to be added</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the item just pushed</dd>
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 <pre class="methodSignature">public&nbsp;int&nbsp;search&#8203;(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;object)</pre>
 <div class="block">Returns the one-based position of the distance from the top that the specified object exists
  on this stack, where the top-most element is considered to be at distance <code>1</code>.  If
  the object is not present on the stack, return <code>-1</code> instead.  The
  <code>equals()</code> method is used to compare to the items in this stack.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>object</code> - the object to be searched for</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the 1-based depth into the stack of the object, or -1 if not found</dd>
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 <div class="block">Returns the element on the top of the stack.</div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the element on the top of the stack</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/7/docs/api/java/util/EmptyStackException.html?is-external=true" title="class or interface in java.util" class="externalLink">EmptyStackException</a></code> - if the stack is empty</dd>
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 <div class="block">Removes the element on the top of the stack.</div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the removed element</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/7/docs/api/java/util/EmptyStackException.html?is-external=true" title="class or interface in java.util" class="externalLink">EmptyStackException</a></code> - if the stack is empty</dd>
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