Compiler JDK 1.6)

Description

publicfinal class Compiler

The Compiler class is provided to support Java-to-native-code compilers and related services.

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.

See also: System.getProperty(java.lang.String) System.getProperty(java.lang.String, java.lang.String) System.loadLibrary(java.lang.String)

Methods

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publicstaticnative Object command (Object any)

Examines the argument type and its fields and perform some documented operation.

Examines the argument type and its fields and perform some documented
operation. No specific operations are required.
Returns: a compiler-specific value, or null if no compiler is available.
Parameters:
- any - an argument.
Throws:
- NullPointerException - if any is null.

publicstaticnative boolean compileClass (Class<Object> clazz)

Compiles the specified class.

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

publicstaticnative boolean compileClasses (String string)

Compiles all classes whose name matches the specified string.

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

publicstaticnative void disable ()

Cause the Compiler to cease operation.

publicstaticnative void enable ()

Cause the Compiler to resume operation.