reflect_demo6.java

java编程源代码

import java.lang.reflect.*;

public class reflect_demo6{
   public static void main(String args[])
   {
        try 
		{
           Class cls = Class.forName("test");
           Class partypes[] = new Class[2];
            partypes[0] = Integer.TYPE;
            partypes[1] = Integer.TYPE;
            Method meth = cls.getMethod("add", partypes);
            test methobj = new test();
            Object arglist[] = new Object[2];
            arglist[0] = new Integer(37);
            arglist[1] = new Integer(47);
            Object retobj = meth.invoke(methobj, arglist);
            Integer retval = (Integer)retobj;
            System.out.println(retval.intValue());
         }
         catch (Throwable e) {
            System.err.println(e);
         }
   }
}

class test
{
	private String name;
	public int a;
	public test(String name, int a)
	{
		this.name=name;
		this.a=a;
	}
	public test()
	{
	}
 	public void show()
	{
	    System.out.println("hello the test");
	}
	public int add(int a,int b)
	{
	    return a+b;
	}
}