Re: empty interfaces via reflection

Steven Simpson <ss@domain.invalid>
Fri, 19 Oct 2007 17:14:43 +0100
Aryeh M. Friedman wrote:

following test code (using findClass not loadClass as the override
method) still doesn't work:

 public static void main(String[] args)
                throws Throwable
                while(true) {
                        ClassLoader loader=new MyClassLoader();

I did get the following to work. It uses a URLClassLoader, as Daniel
Pitts suggested. Your MyClassLoader didn't seem to be doing anything
extra, so you may as well use the existing class - though I don't see
why yours wouldn't work.

You give the directory containing the class to be tested as the first
argument, and it is turned into a URL for the class loader. Make sure
this directory is not in your classpath.


public class Test {
  public static void main(String[] args) throws Throwable {
    File f = new File(args[0]);
    URL[] path = new URL[] { f.toURI().toURL() };

    while (true) {
      ClassLoader loader = new URLClassLoader(path);
      Class klass = loader.loadClass("SomeClass");
      Object o = klass.newInstance();


ss at comp dot lancs dot ac dot uk |

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