Name: sgC58550 Date: 06/05/97


When you use the Introspector to get the methods for the
AWT Dialog or Window classes by using getBeanInfo() and then
calling the bean info's getMethodDescriptors() method, the
zero argument show() method from these classes is not present.
The one argument version of show(boolean) that is inherited
from Component is present however. (Note that if you use the
Introspector on the Component class both the zero arument and
one argument show methods are retrieved by
getMethodDescriptors()). It all worked correctly under
JDK 1.1.1.

Here is a test program that demonstrates the problem:

import java.beans.Introspector;
import java.beans.BeanInfo;
import java.beans.MethodDescriptor;
import java.lang.reflect.Method;

public class BeanMethodTest {

    public static void main(String[] args) throws Exception {
            //Introspector.setBeanInfoSearchPath(new String[0]);
            Class aClass = Class.forName(args[0]);
            Class stopClass = null;
            if (args.length > 1) {
                stopClass = Class.forName(args[1]);
            }
            System.out.println("Introspection:");
            BeanInfo bi = Introspector.getBeanInfo(aClass, stopClass);
            MethodDescriptor[] mds = bi.getMethodDescriptors();
            for (int i = 0; i < mds.length; i++) {
                Method m = mds[i].getMethod();
                System.out.println(mds[i].getDisplayName() + ", arity = " +
                                   m.getParameterTypes().length);
            }
    }

}

Invoke it as "java BeanMethodTest java.awt.Dialog", and you will
see that only the one argument show method is reported.


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