Compiler Class provides support and related services to Java code to Native Code.
Native code is a form of code that can be said to run in a virtual machine (for example, [JVM]Java Virtual Machine).
Declaration :
public final class Compiler extends Object
Methods :
- command() : java.lang.Compiler.command() tests the argument type and performs some documented operations.
Syntax :public static boolean command(Object argument) Parameters : argument : needs to be compiler specific. Return : compiler specific value Exception : -> NullPointerException
- compileClass() : java.lang.Compiler.compileClass() compiles the specified class.
Syntax :
public static boolean compileClass(Class c) Parameters : c : class to be compiled. Return : true if the compilation succeeded else, false Exception : -> NullPointerException
- enable() : java.lang.Compiler.enable() cause compiler to start operation.
Syntax :public static void enable() Parameters : ------ Return : void
- disable() : java.lang.Compiler.disable() stops compiler to perform operations.
Syntax :public static void disable() Parameters : ------- Return : void
- compileClasses() : java.lang.Compiler.compileClasses() compiles the classes having the name as string – “str”
Syntax :public static boolean compileClasses(String string) Parameters : str : name of the class to be compiled Return : true if the classes are compiled successfully Exception : -> NullPointerException
// Java Program illustrating the use of Compiler class Methods. import java.lang.*; public class NewClass { public static void main(String[] args) { CompilerClass geek = new CompilerClass(); // Use of enable() : Compiler.enable(); // class CompilerDemo Class c = geek.getClass(); System.out.println(c); // Use of command() : Object g = Compiler.command( "javac CompilerClass" ); System.out.println( "Value : " + g); // Use of compileClass : // Since it is not a subclass so there is no compiler for it boolean check = Compiler.compileClass(c); System.out.println( "\nIs compilation successful ? : " + check); String str = "CompilerClass" ; boolean check1 = Compiler.compileClasses(str); System.out.println( "\nIs compilation successful using str ? : " + check1); // Use of disable() : Compiler.disable(); } private static class CompilerClass { public CompilerClass() { } } } |
Output :
class NewClass$CompilerClass Value : null Is compilation successful ? : false Is compilation successful using str ? : false
Note :
lang.Compiler Class inherits others methods from Object class in Java.
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