I want to run test cases in a jar file using junit and the jar file is
not in the class path. I wrote the following code, but it does not
work.

import java.net.URL;
import java.net.URLClassLoader;
import junit.framework.TestResult;
import junit.textui.TestRunner;
public class MyTestRunner {
    public static void main(String[] args) throws Exception{
        URL url = new URL("file:///d:/case.jar");
        URLClassLoader loader = new URLClassLoader(new URL[]{url});
        loader.loadClass("TestCase1");
        TestRunner runner = new TestRunner();
        TestResult result = runner.start(new String[]{"TestCase1"});
        System.out.println(result.toString());
    }
}

any ideas?

Thanks a lot.