Compiler (Java Platform SE 6)

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Java™ Platform
Standard Ed. 6

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java.lang
Class Compiler

java.lang.Object
 extended by java.lang.Compiler

public final class Compiler
extends Object
extends Object

The Compiler class is provided to support Java-to-native-code compilers and related services. By design, the Compiler class does nothing; it serves as a placeholder for a JIT compiler implementation.

When the Java Virtual Machine first starts, it determines if the system property java.compiler exists. (System properties are accessible through getProperty, a method defined by the System class.) If so, it is assumed to be the name of a library (with a platform-dependent exact location and type); the loadLibrary method in class System is called to load that library. If this loading succeeds, the function named java_lang_Compiler_start() in that library is called.

If no compiler is available, these methods do nothing.

Since:: JDK1.0
See Also:: System.getProperty(java.lang.String), System.getProperty(java.lang.String, java.lang.String), System.loadLibrary(java.lang.String)

Method Summary
`static Object`	`command(Object any)` Examines the argument type and its fields and perform some documented operation.
`static boolean`	`compileClass(Class<?> clazz)` Compiles the specified class.
`static boolean`	`compileClasses(String string)` Compiles all classes whose name matches the specified string.
`static void`	`disable()` Cause the Compiler to cease operation.
`static void`	`enable()` Cause the Compiler to resume operation.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Method Detail

compileClass

public static boolean compileClass(Class<?> clazz)

Compiles the specified class.

Parameters:: clazz - a class.
Returns:: true if the compilation succeeded; false if the compilation failed or no compiler is available.
Throws:: NullPointerException - if clazz is null.

compileClasses

public static boolean compileClasses(String string)

Compiles all classes whose name matches the specified string.

Parameters:: string - the name of the classes to compile.
Returns:: true if the compilation succeeded; false if the compilation failed or no compiler is available.
Throws:: NullPointerException - if string is null.

command

public static Object command(Object any)

Examines the argument type and its fields and perform some documented operation. No specific operations are required.

Parameters:: any - an argument.
Returns:: a compiler-specific value, or null if no compiler is available.
Throws:: NullPointerException - if any is null.

enable

public static void enable()

Cause the Compiler to resume operation.

disable

public static void disable()

Cause the Compiler to cease operation.