java.lang.Compiler翻译

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<HTML>

<HEAD>

<TITLE>

Compiler (Java 2 Platform SE v1.4.2)

</TITLE>

function windowTitle()

{

parent.document.title="Compiler (Java 2 Platform SE v1.4.2)";

}

</SCRIPT>

</HEAD>

<TR>

<TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../overview-summary.html">Overview</A> </TD>

<TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html">Package</A> </TD>

<TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev">  Class </TD>

<TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../deprecated-list.html">Deprecated</A> </TD>

<TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../index-files/index-1.html">Index</A> </TD>

</TR>

</TABLE>

</TD>

JavaTM 2 Platform Std. Ed. v1.4.2

</TD>

</TR>

<TR>

<A HREF="../../java/lang/ClassLoader.html" title="class in java.lang">PREV CLASS</A>

<A HREF="../../java/lang/Double.html" title="class in java.lang">NEXT CLASS</A></TD>

<A HREF="../../index.html" target="_top">FRAMES</A>

<A HREF="Compiler.html" target="_top">NO FRAMES</A>

<!--

if(window==top) {

document.writeln('<A HREF="../../allclasses-noframe.html">All Classes</A>');

}

//-->

</SCRIPT>

<A HREF="../../allclasses-noframe.html">All Classes</A>

</NOSCRIPT>

</TD>

</TR>

<TR>

SUMMARY: NESTED | FIELD | CONSTR | <A HREF="#method_summary">METHOD</A></TD>

DETAIL: FIELD | CONSTR | <A HREF="#method_detail">METHOD</A></TD>

</TR>

</TABLE>

<HR>

<H2>

java.lang

Class Compiler</H2>

<PRE>

<A HREF="../../java/lang/Object.html" title="class in java.lang">java.lang.Object</A>

<IMG SRC="../../resources/inherit.gif" ALT="extended by">java.lang.Compiler

</PRE>

<HR>

<DL>

<DT>public final class Compiler<DT>extends <A HREF="../../java/lang/Object.html" title="class in java.lang">Object</A></DL>

The <code>Compiler</code> class is provided to support

Java-to-native-code compilers and related services. By design, the

<code>Compiler</code> class does nothing; it serves as a

placeholder for a JIT compiler implementation.

Compiler类被用来支持Java-本地代码的编译器和相关服务。设计中，Compiler不做任何事，只是充当JIT编译器实现中的占位符。

When the Java Virtual Machine first starts, it determines if the

system property <code>java.compiler</code> exists. (System

properties are accessible through <code>getProperty</code> and ,

a method defined by the <code>System</code> class.) If so, it is

assumed to be the name of a library (with a platform-dependent

exact location and type); the <code>loadLibrary</code> method in

class <code>System</code> is called to load that library. If this

loading succeeds, the function named

<code>java_lang_Compiler_start()</code> in that library is called.

当Java虚拟机第一次启动时，它先判断系统属性java.compiler是否存在（系统属性通过

System类的getProperty方法访问）。如果存在，它将被假定为一个库名（一个平台无关的确切路径和类型），调用System

的loadLibrary方法加载该库。如果成功加载，调用该库中的java_lang_Compiler_start()方法。

If no compiler is available, these methods do nothing.

如果没有可用的编译器，这些方法不做任何事。

<DL>

<DT>Since:</DT>

<DT>See Also:<DD><A HREF="../../java/lang/System.html#getProperty(java.lang.String)"><CODE>System.getProperty(java.lang.String)</CODE></A>,

<A HREF="../../java/lang/System.html#getProperty(java.lang.String, java.lang.String)"><CODE>System.getProperty(java.lang.String, java.lang.String)</CODE></A>,

<A HREF="../../java/lang/System.html#loadLibrary(java.lang.String)"><CODE>System.loadLibrary(java.lang.String)</CODE></A></DL>

<HR>

Method Summary</TD>

</TR>

<CODE>static <A HREF="../../java/lang/Object.html" title="class in java.lang">Object</A></CODE></TD>

<TD><CODE><A HREF="../../java/lang/Compiler.html#command(java.lang.Object)">command</A>(<A HREF="../../java/lang/Object.html" title="class in java.lang">Object</A> any)</CODE>

          Examines the argument type and its fields and perform some documented

operation.检查参数类型及其域，并执行某些文档操作。</TD>

</TR>

<CODE>static boolean</CODE></TD>

<TD><CODE><A HREF="../../java/lang/Compiler.html#compileClass(java.lang.Class)">compileClass</A>(<A HREF="../../java/lang/Class.html" title="class in java.lang">Class</A> clazz)</CODE>

Compiles the specified class.编译指定的类。</TD>

</TR>

<CODE>static boolean</CODE></TD>

<TD><CODE><A HREF="../../java/lang/Compiler.html#compileClasses(java.lang.String)">compileClasses</A>(<A HREF="../../java/lang/String.html" title="class in java.lang">String</A> string)</CODE>

Compiles all classes whose name matches the specified string.编译所有名称和指定字符串相匹配的类。</TD>

</TR>

<CODE>static void</CODE></TD>

<TD><CODE><A HREF="../../java/lang/Compiler.html#disable()">disable</A>()</CODE>

          Cause the Compiler to cease operation.

使Compiler中止运行。</TD>

</TR>

<CODE>static void</CODE></TD>

<TD><CODE><A HREF="../../java/lang/Compiler.html#enable()">enable</A>()</CODE>

          Cause the Compiler to resume operation.

使Compiler恢复运行。</TD>

</TR>

</TABLE>

<TD>Methods inherited from class java.lang.<A HREF="../../java/lang/Object.html" title="class in java.lang">Object</A></TD>

</TR>

<TD><CODE><A HREF="../../java/lang/Object.html#clone()">clone</A>, <A HREF="../../java/lang/Object.html#equals(java.lang.Object)">equals</A>, <A HREF="../../java/lang/Object.html#finalize()">finalize</A>, <A HREF="../../java/lang/Object.html#getClass()">getClass</A>, <A HREF="../../java/lang/Object.html#hashCode()">hashCode</A>, <A HREF="../../java/lang/Object.html#notify()">notify</A>, <A HREF="../../java/lang/Object.html#notifyAll()">notifyAll</A>, <A HREF="../../java/lang/Object.html#toString()">toString</A>, <A HREF="../../java/lang/Object.html#wait()">wait</A>, <A HREF="../../java/lang/Object.html#wait(long)">wait</A>, <A HREF="../../java/lang/Object.html#wait(long, int)">wait</A></CODE></TD>

</TR>

</TABLE>

Method Detail</TD>

</TR>

</TABLE>

compileClass</H3>

<PRE>

public static boolean compileClass(<A HREF="../../java/lang/Class.html" title="class in java.lang">Class</A> clazz)</PRE>

<DL>

<DD>Compiles the specified class. 编译指定的类。

<DT>Parameters:<DD><CODE>clazz</CODE> - a class. 类。

<DT>Returns:<DD><code>true</code> if the compilation succeeded;

<code>false</code> if the compilation failed or no compiler

is available. 如果编译成功，返回true，如果编译失败或者没有可用的编译器返回false。

<DT>Throws:

<DD><CODE><A HREF="../../java/lang/NullPointerException.html" title="class in java.lang">NullPointerException</A></CODE> - if <code>clazz</code> is

<code>null</code>. 如果clazz为null时抛出。</DL>

</DD>

</DL>

<HR>

compileClasses</H3>

<PRE>

public static boolean compileClasses(<A HREF="../../java/lang/String.html" title="class in java.lang">String</A> string)</PRE>

<DL>

<DD>Compiles all classes whose name matches the specified string.

编译所有名称和指定字符串相匹配的类。

<DT>Parameters:<DD><CODE>string</CODE> - the name of the classes to compile. 用来编译的类名称。

<DT>Returns:<DD><code>true</code> if the compilation succeeded;

<code>false</code> if the compilation failed or no compiler

is available. 如果编译成功，返回true，如果编译失败或者没有可用的编译器返回false。

<DT>Throws:

<DD><CODE><A HREF="../../java/lang/NullPointerException.html" title="class in java.lang">NullPointerException</A></CODE> - if <code>string</code> is

<code>null</code>. 如果string为null时抛出。</DL>

</DD>

</DL>

<HR>

command</H3>

<PRE>

public static <A HREF="../../java/lang/Object.html" title="class in java.lang">Object</A> command(<A HREF="../../java/lang/Object.html" title="class in java.lang">Object</A> any)</PRE>

<DL>

<DD>Examines the argument type and its fields and perform some documented

operation. No specific operations are required.

检查参数类型及其域，并执行某些文档操作。不需要指定操作。

<DT>Parameters:<DD><CODE>any</CODE> - an argument. 参数。

<DT>Returns:<DD>a compiler-specific value, or <code>null</code> if no compiler

is available. 编译器指定值，如果没有可用的编译器，为null。

<DT>Throws:

<DD><CODE><A HREF="../../java/lang/NullPointerException.html" title="class in java.lang">NullPointerException</A></CODE> - if <code>any</code> is

<code>null</code>. 如果any为null时抛出。</DL>

</DD>

</DL>

<HR>

enable</H3>

<PRE>

public static void enable()</PRE>

<DL>

<DD>Cause the Compiler to resume operation. 使Compiler恢复运行。

</DL>

</DD>

</DL>

<HR>

disable</H3>

<PRE>

public static void disable()</PRE>

<DL>

<DD>Cause the Compiler to cease operation. 使Compiler中止运行。

</DL>

</DD>

</DL>

<HR>

<TR>

<TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../overview-summary.html">Overview</A> </TD>

<TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html">Package</A> </TD>

<TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev">  Class </TD>

<TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../deprecated-list.html">Deprecated</A> </TD>

<TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../index-files/index-1.html">Index</A> </TD>

</TR>

</TABLE>

</TD>

JavaTM 2 Platform Std. Ed. v1.4.2

</TD>

</TR>

<TR>

<A HREF="../../java/lang/ClassLoader.html" title="class in java.lang">PREV CLASS</A>

<A HREF="../../java/lang/Double.html" title="class in java.lang">NEXT CLASS</A></TD>

<A HREF="../../index.html" target="_top">FRAMES</A>

<A HREF="Compiler.html" target="_top">NO FRAMES</A>

<!--

if(window==top) {

document.writeln('<A HREF="../../allclasses-noframe.html">All Classes</A>');

}

//-->

</SCRIPT>

<A HREF="../../allclasses-noframe.html">All Classes</A>

</NOSCRIPT>

</TD>

</TR>

<TR>

SUMMARY: NESTED | FIELD | CONSTR | <A HREF="#method_summary">METHOD</A></TD>

DETAIL: FIELD | CONSTR | <A HREF="#method_detail">METHOD</A></TD>

</TR>

</TABLE>

<HR>

<a href="http://java.sun.com/cgi-bin/bugreport.cgi">Submit a bug or feature</a> For further API reference and developer documentation, see <a href="../../../relnotes/devdocs-vs-specs.html">Java 2 SDK SE Developer Documentation</a>. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples. Copyright 2003 Sun Microsystems, Inc. All rights reserved. Use is subject to <a href="../../../relnotes/license.html">license terms</a>. Also see the <a href="http://java.sun.com/docs/redist.html">documentation redistribution policy</a>.

</BODY>

</HTML>