Class 在 Java 反射中未发现异常

Question

Hi I am using the following code from this site:http://java.sun.com/developer/technicalArticles/ALT/Reflection/

But when I am running it it showing exception java.lang.ClassNotFoundException: A May be I am going somewhere wrong Please help. Here is the code:

 package com.Test; class A {} public class instance1 { public static void main(String args[]) { try { Class cls = Class.forName("A"); System.out.println("gfsdga"); boolean b1 = cls.isInstance(new Integer(37)); System.out.println(b1); boolean b2 = cls.isInstance(new A()); System.out.println(b2); } catch (Throwable e) { System.err.println(e); } } }

Answer 1

The class is actually called com.Test.A because you've declared it within the com.Test package - Class.forName() takes the package-qualified class name. (Note that com.Test is a pretty odd package name, too.)

Answer 2

You need Class.forName("com.Test.A") instead.