Class Compiler
- java.lang.Object
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- java.lang.Compiler
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public final class Compiler extends Object
TheCompilerclass is provided to support Java-to-native-code compilers and related services. By design, theCompilerclass 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.compilerexists. (System properties are accessible throughSystem.getProperty(String)andSystem.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(java.lang.String)is called to load that library. If this loading succeeds, the function namedjava_lang_Compiler_start()in that library is called.If no compiler is available, these methods do nothing.
- Since:
- JDK1.0
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method and Description static Objectcommand(Object any)Examines the argument type and its fields and perform some documented operation.static booleancompileClass(Class<?> clazz)Compiles the specified class.static booleancompileClasses(String string)Compiles all classes whose name matches the specified string.static voiddisable()Cause the Compiler to cease operation.static voidenable()Cause the Compiler to resume operation.
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Method Detail
compileClass
public static boolean compileClass(Class<?> clazz)
Compiles the specified class.- Parameters:
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clazz- A class - Returns:
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trueif the compilation succeeded;falseif the compilation failed or no compiler is available - Throws:
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NullPointerException- Ifclazzisnull
compileClasses
public static boolean compileClasses(String string)
Compiles all classes whose name matches the specified string.- Parameters:
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string- The name of the classes to compile - Returns:
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trueif the compilation succeeded;falseif the compilation failed or no compiler is available - Throws:
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NullPointerException- Ifstringisnull
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:
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any- An argument - Returns:
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A compiler-specific value, or
nullif no compiler is available - Throws:
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NullPointerException- Ifanyisnull
enable
public static void enable()
Cause the Compiler to resume operation.
disable
public static void disable()
Cause the Compiler to cease operation.
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For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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