Reflective invoke of variable-argument method?

Question

I'm having trouble reflectively invoking a variable-argument method. Can anyone provide a code snippet that does it? Here's my test, with the output below:
package comet.pod;
import java.lang.reflect.Method;
public class Test
   public void doSomething (Object... args)
      System.out.println ("hello world");
   public void test()
      Method method = null;
      try
         Class<?> c = Test.class;
         Class[] argTypes = new Class[] { Object[].class };
         method = c.getMethod ("doSomething", argTypes);
         System.out.println ("is VarArgs? " + method.isVarArgs());
      catch (Exception x) { System.err.println (x); }
      try
         method.invoke (this, (Object[]) null);
      catch (Exception x) { System.err.println (x); }
      try
         method.invoke (this, new Object());
      catch (Exception x) { System.err.println (x); }
      try
         method.invoke (this, new Object[] { "arg" });
      catch (Exception x) { System.err.println (x); }
   public static void main (final String[] args)
      new Test().test();
}is VarArgs? true
java.lang.IllegalArgumentException: wrong number of arguments
java.lang.IllegalArgumentException: argument type mismatch
java.lang.IllegalArgumentException: argument type mismatch

Answer 1

You need something like:
method.invoke(this, new Object[] { new Object[] { "arg1", "arg2" } });To see why, consider what you would do if your method was:
public void doSomething (Object a1, Object a2, Object... aVar)Alex