90 lines
4.5 KiB
Java
90 lines
4.5 KiB
Java
// Copyright (c) 2006, 2012, Oracle and/or its affiliates. All rights reserved.
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// @(#)Launcher.java 1.3 10/03/24 SMI
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import java.lang.reflect.*;
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public class Launcher {
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// Byte array for dynamically loaded class: //
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//public class DynLoadedClass { //
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// public int DynamicFunction(int x) { //
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// float f = 0; //
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// for (int k=0 ; k<20000; k++) { //
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// f = ((float)k) / x; //
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// } //
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// return (int)f; //
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// } //
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// //
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// public static void main(String[] args){ //
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// DynLoadedClass dcls = new DynLoadedClass(); //
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// for (int k=0 ; k<10; k++) { //
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// dcls.DynamicFunction(k); //
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// } //
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// } //
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//} //
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static final byte [] bClassGenerated = {
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-54, -2, -70, -66, 0, 0, 0, 46, 0, 20, 10, 0, 5, 0, 16, 7, 0, 17, 10, 0, 2, 0, 16, 10, 0, 2,
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0, 18, 7, 0, 19, 1, 0, 6, 60, 105, 110, 105, 116, 62, 1, 0, 3, 40, 41, 86, 1, 0, 4, 67, 111,
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100, 101, 1, 0, 15, 76, 105, 110, 101, 78, 117, 109, 98, 101, 114, 84, 97, 98, 108, 101, 1, 0, 15, 68, 121,
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110, 97, 109, 105, 99, 70, 117, 110, 99, 116, 105, 111, 110, 1, 0, 4, 40, 73, 41, 73, 1, 0, 4, 109, 97,
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105, 110, 1, 0, 22, 40, 91, 76, 106, 97, 118, 97, 47, 108, 97, 110, 103, 47, 83, 116, 114, 105, 110, 103, 59,
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41, 86, 1, 0, 10, 83, 111, 117, 114, 99, 101, 70, 105, 108, 101, 1, 0, 19, 68, 121, 110, 76, 111, 97, 100,
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101, 100, 67, 108, 97, 115, 115, 46, 106, 97, 118, 97, 12, 0, 6, 0, 7, 1, 0, 14, 68, 121, 110, 76, 111,
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97, 100, 101, 100, 67, 108, 97, 115, 115, 12, 0, 10, 0, 11, 1, 0, 16, 106, 97, 118, 97, 47, 108, 97, 110,
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103, 47, 79, 98, 106, 101, 99, 116, 0, 33, 0, 2, 0, 5, 0, 0, 0, 0, 0, 3, 0, 1, 0, 6, 0,
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7, 0, 1, 0, 8, 0, 0, 0, 29, 0, 1, 0, 1, 0, 0, 0, 5, 42, -73, 0, 1, -79, 0, 0, 0,
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1, 0, 9, 0, 0, 0, 6, 0, 1, 0, 0, 0, 1, 0, 1, 0, 10, 0, 11, 0, 1, 0, 8, 0, 0,
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0, 66, 0, 2, 0, 4, 0, 0, 0, 26, 11, 69, 3, 62, 29, 17, 78, 32, -94, 0, 15, 29, -122, 27, -122,
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110, 69, -124, 3, 1, -89, -1, -16, 36, -117, -84, 0, 0, 0, 1, 0, 9, 0, 0, 0, 22, 0, 5, 0, 0,
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0, 3, 0, 2, 0, 4, 0, 11, 0, 5, 0, 17, 0, 4, 0, 23, 0, 7, 0, 9, 0, 12, 0, 13, 0,
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1, 0, 8, 0, 0, 0, 69, 0, 2, 0, 3, 0, 0, 0, 29, -69, 0, 2, 89, -73, 0, 3, 76, 3, 61,
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28, 16, 10, -94, 0, 15, 43, 28, -74, 0, 4, 87, -124, 2, 1, -89, -1, -15, -79, 0, 0, 0, 1, 0, 9,
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0, 0, 0, 22, 0, 5, 0, 0, 0, 11, 0, 8, 0, 12, 0, 16, 0, 13, 0, 22, 0, 12, 0, 28, 0,
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15, 0, 1, 0, 14, 0, 0, 0, 2, 0, 15
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};
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private static DynClassLoader persistentInstance;
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public static DynClassLoader getPersistentInstance()
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{
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if (persistentInstance == null)
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persistentInstance = new DynClassLoader();
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return persistentInstance;
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}
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public static void main(String args []) {
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if (args.length != 1) {
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System.err.println("Usage: Launcher DynLoadedClass");
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return;
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}
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String className = args[0]; // Dynamic class name
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try {
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Class genClass = getPersistentInstance().getClassFromByteArray(className, bClassGenerated);
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Method[] methods_g = genClass.getDeclaredMethods();
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for (int i = 0; i < methods_g.length; i++) {
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Method m = methods_g[i];
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String methodName = m.getName();
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String progArgs[] = new String[1];
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//System.out.println("Invoking method " + className + "." + methodName);
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if (methodName.equals("main"))
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m.invoke( null, (Object[]) progArgs );
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}
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} catch (InvocationTargetException iex) {
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System.err.println("InvocationTargetException");
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} catch (IllegalAccessException aex) {
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System.err.println("IllegalAccessException");
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}
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}
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// Class loader to generate dynamic class on the fly from the byte array
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private static class DynClassLoader extends ClassLoader {
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public DynClassLoader() { }
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public Class getClassFromByteArray(String name, byte[] b) {
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return super.defineClass(name, b, 0, b.length);
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}
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}
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}
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