Name: mc57594 Date: 05/21/97


Invocations of public methods in non-public classes are disallowed. This makes it impossible to invoke methods of public interfaces that are implemented by non-public classes, like "hasMoreElmeents" in VectorEnumerator.

For instance, the following code throws an IllegalAccessException:


import java.util.Vector;
import java.lang.reflect.Method;

public class test {

public static void main(String[] argv) {
Vector v = new Vector();
v.addElement("foo");

Object o = v.elements();
Class c = o.getClass();

Method[] m = c.getDeclaredMethods();

try {
for (int i = 0; i < m.length; i++)
if (m[i].getName().equals("hasMoreElements"))
System.out.println(m[i].invoke(
o,new Object[0]));
}
catch (Exception e) {
System.out.println(e);
}
}
}

I have traced this to line 155 of reflect.c, which calls VerifyClassAccess() and disallows the invocation.
-Clint

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