java.lang: public final class: Compiler

java.lang
public final class: Compiler [javadoc | source]

java.lang.Object
   java.lang.Compiler

The {@code Compiler} class is provided to support Java-to-native-code compilers and related services. By design, the {@code 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 {@code java.compiler} exists. (System properties are accessible through System#getProperty(String) and System#getProperty(String, String) . If so, it is assumed to be the name of a library (with a platform-dependent exact location and type); System#loadLibrary is called to load that library. If this loading succeeds, the function named {@code java_lang_Compiler_start()} in that library is called.

If no compiler is available, these methods do nothing.

author: Frank - Yellin

since: JDK1.0 -

Method from java.lang.Compiler Summary:
command, compileClass, compileClasses, disable, enable

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

Method from java.lang.Compiler Detail:
public static native Object command(Object any) Examines the argument type and its fields and perform some documented operation. No specific operations are required.
public static native boolean compileClass(Class clazz) Compiles the specified class.
public static native boolean compileClasses(String string) Compiles all classes whose name matches the specified string.
public static native void disable() Cause the Compiler to cease operation.
public static native void enable() Cause the Compiler to resume operation.