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<h1>System Class Reference</h1><a href="classlog4cxx_1_1helpers_1_1System-members.html">List of all members.</a><table border=0 cellpadding=0 cellspacing=0>
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<tr><td colspan=2><br><h2>Static Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>int64_t&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="classlog4cxx_1_1helpers_1_1System.html#e0">currentTimeMillis</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>String&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="classlog4cxx_1_1helpers_1_1System.html#e1">getProperty</a> (const String &amp;key)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>void&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="classlog4cxx_1_1helpers_1_1System.html#e2">setProperty</a> (const String &amp;key, const String &amp;value)</td></tr>
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<hr><a name="_details"></a><h2>Detailed Description</h2>
The <a class="el" href="classlog4cxx_1_1helpers_1_1System.html">System</a> class contains several useful class fields and methods. It cannot be instantiated.
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<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="e0" doxytag="log4cxx::helpers::System::currentTimeMillis" ></a><p>
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<td class="md" nowrap valign="top"> int64_t currentTimeMillis </td>
<td class="md" valign="top">(&nbsp;</td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top">&nbsp;)&nbsp;</td>
<td class="md" nowrap><code> [static]</code></td>
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<p>
Returns the current time in milliseconds since midnight (0 hour), January 1, 1970.<p>
Returns the current time in milliseconds. Note that while the unit of time of the return value is a millisecond, the granularity of the value depends on the underlying operating system and may be larger. For example, many operating systems measure time in units of tens of milliseconds.<p>
<dl compact><dt><b>Returns:</b></dt><dd>the difference, measured in milliseconds, between the current time and midnight, January 1, 1970 UTC.</dd></dl>
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<a class="anchor" name="e1" doxytag="log4cxx::helpers::System::getProperty" ></a><p>
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<td class="md" nowrap valign="top"> String getProperty </td>
<td class="md" valign="top">(&nbsp;</td>
<td class="md" nowrap valign="top">const String &amp;&nbsp;</td>
<td class="mdname1" valign="top" nowrap> <em>key</em> </td>
<td class="md" valign="top">&nbsp;)&nbsp;</td>
<td class="md" nowrap><code> [static]</code></td>
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<p>
Gets the system property indicated by the specified key.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
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<tr><td valign=top><em>key</em>&nbsp;</td><td>the name of the system property.</td></tr>
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</dl>
<dl compact><dt><b>Returns:</b></dt><dd>the string value of the system property, or the default value if there is no property with that key.</dd></dl>
<dl compact><dt><b>Exceptions:</b></dt><dd>
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<tr><td valign=top><em>IllegalArgumentException</em>&nbsp;</td><td>if key is empty.</td></tr>
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</dl>
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<a class="anchor" name="e2" doxytag="log4cxx::helpers::System::setProperty" ></a><p>
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<td class="md" nowrap valign="top"> void setProperty </td>
<td class="md" valign="top">(&nbsp;</td>
<td class="md" nowrap valign="top">const String &amp;&nbsp;</td>
<td class="mdname" nowrap> <em>key</em>, </td>
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<td></td>
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<td class="md" nowrap>const String &amp;&nbsp;</td>
<td class="mdname" nowrap> <em>value</em></td>
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<td class="md">)&nbsp;</td>
<td class="md" colspan="2"><code> [static]</code></td>
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<p>
Sets the system property indicated by the specified key.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
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<tr><td valign=top><em>key</em>&nbsp;</td><td>the name of the system property. </td></tr>
<tr><td valign=top><em>value</em>&nbsp;</td><td>the value of the system property.</td></tr>
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<dl compact><dt><b>Exceptions:</b></dt><dd>
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<tr><td valign=top><em>IllegalArgumentException</em>&nbsp;</td><td>if key is empty.</td></tr>
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<hr>The documentation for this class was generated from the following files:<ul>
<li>system.h<li>system.cpp</ul>
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