/*
*
* Copyright (c) 1998 Scott Oaks. All Rights Reserved.
*
* Permission to use, copy, modify, and distribute this software
* and its documentation for NON-COMMERCIAL purposes and
* without fee is hereby granted.
*
* This sample source code is provided for example only,
* on an unsupported, as-is basis.
*
* AUTHOR MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF
* THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
* TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE, OR NON-INFRINGEMENT. AUTHOR SHALL NOT BE LIABLE FOR
* ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
* DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
*
* THIS SOFTWARE IS NOT DESIGNED OR INTENDED FOR USE OR RESALE AS ON-LINE
* CONTROL EQUIPMENT IN HAZARDOUS ENVIRONMENTS REQUIRING FAIL-SAFE
* PERFORMANCE, SUCH AS IN THE OPERATION OF NUCLEAR FACILITIES, AIRCRAFT
* NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL, DIRECT LIFE
* SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH THE FAILURE OF THE
* SOFTWARE COULD LEAD DIRECTLY TO DEATH, PERSONAL INJURY, OR SEVERE
* PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH RISK ACTIVITIES"). AUTHOR
* SPECIFICALLY DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR
* HIGH RISK ACTIVITIES.
*/
import java.lang.reflect.*;
public class JavaRunner implements Runnable {
final static int numArgs = 2;
ClassLoader cl;
String className;
Object args[];
JavaRunner(ClassLoader cl, String className, Object args[]) {
this.cl = cl;
this.className = className;
this.args = args;
}
void invokeMain(Class clazz) {
Class argList[] = new Class[1];
String strArray[] = new String[1];
argList[0] = strArray.getClass();
Method mainMethod = null;
try {
mainMethod = clazz.getMethod("main", argList);
} catch (NoSuchMethodException nsme) {
System.out.println("No main method in " + clazz.getName());
System.exit(-1);
}
try {
mainMethod.invoke(null, args);
} catch (Throwable e) {
e.printStackTrace();
if (e instanceof InvocationTargetException)
e = ((InvocationTargetException) e)
.getTargetException();
System.out.println("Procedure exited with exception " + e);
e.printStackTrace();
}
}
public void run() {
Class target = null;
try {
target = cl.loadClass(className);
invokeMain(target);
} catch (ClassNotFoundException cnfe) {
System.out.println("Can't load " + className);
cnfe.printStackTrace();
}
}
static Object[] getArgs(String args[]) {
String passArgs[] = new String[args.length - numArgs];
for (int i = numArgs; i < args.length; i++)
passArgs[i - numArgs] = args[i];
Object wrapArgs[] = new Object[1];
wrapArgs[0] = passArgs;
return wrapArgs;
}
public static void main(String args[]) {
Class self = JavaRunner.class;
JavaRunnerLoader jrl = new
JavaRunnerLoader(args[0], self.getClassLoader());
ThreadGroup tg = new ThreadGroup("JavaRunner Threadgroup");
Thread t = new Thread(tg,
new JavaRunner(jrl, args[1], getArgs(args)));
t.start();
try {
t.join();
} catch (InterruptedException ie) {
System.out.println("Thread was interrupted");
}
}
}
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