Por favor, lembre-se que esta tradução da especificação é resultado de um projeto da comunidade java.net( https://jdk5-api-pt-br.dev.java.net/). A versão oficial da especificação é a versão na língua inglesa que pode ser encontrada em http://java.sun.com/j2se/1.5.0/docs/api/. Em caso de divergências, a versão predominante da especificação é a original em inglês.

Please note that this translation of the specification is the result of a java.net community project ( https://jdk5-api-pt-br.dev.java.net/ ). The official version of the specification is the US English language version which can be found at http://java.sun.com/j2se/1.5.0/docs/api/. In case of disputes, the authoritative version of the specification is the original, English document.

java.lang
Class Compiler

java.lang.Object
  java.lang.Compiler

public final class Compiler
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 and , 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.