Compiler (Java Platform SE 6) (original) (raw)
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, theCompiler 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 namedjava_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)](../../java/lang/System.html#getProperty%28java.lang.String, java.lang.String%29), 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](../../java/lang/Object.html#wait%28long, int%29) |
| 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](../../java/lang/NullPointerException.html "class in java.lang") - 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](../../java/lang/NullPointerException.html "class in java.lang") - 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](../../java/lang/NullPointerException.html "class in java.lang") - 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.
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For further API reference and developer documentation, see Java SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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