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JavaRunner.javaAPI DocExample3174Sun Oct 25 18:13:34 GMT 1998None

JavaRunner

public class JavaRunner extends Object implements Runnable

Fields Summary
static final int
numArgs
private Object[]
args
private String
className
Constructors Summary
JavaRunner(String className, Object[] args)


	    
	    this.className = className;
	    this.args = args;
	
Methods Summary
static java.lang.Object[]getArgs(java.lang.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;
	
voidinvokeMain(java.lang.Class clazz)

		Class argList[] = new Class[] { String[].class };
		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 (Exception e) {
			Throwable t;
			if (e instanceof InvocationTargetException)
				t = ((InvocationTargetException) e)
										.getTargetException();
			else t = e;
			System.out.println("Procedure exited with exception " + t);
			t.printStackTrace();
		}
	
public static voidmain(java.lang.String[] args)

	
		try {
			if (args.length < 1) {
				System.err.println("usage:  JavaRunner classfile");
				System.exit(-1);
			}
			ThreadGroup tg = new ThreadGroup("JavaRunner Threadgroup");
			Thread t = new Thread(tg,
					new JavaRunner(args[0], getArgs(args)));
			t.start();
			try {
				t.join();
			} catch (InterruptedException ie) {
				System.out.println("Thread was interrupted");
			}
		} catch (Exception e) {
		    e.printStackTrace();
		}
	
public voidrun()

		Class target = null;
		try {
			target = Class.forName(className);
			invokeMain(target);
		} catch (ClassNotFoundException cnfe) {
			System.out.println("Can't load " + className);
		}