package com.jiangqq.reflection;  
import java.lang.reflect.Constructor;  
import java.lang.reflect.Method;  
/** 
 * 反射练习二,使用反射访问类中的方法 
 *  
 * @author jiangqq 
 *  
 */  
public class Reflection2 {  
    public int sum(int a, int b) {  
        return a + b;  
    }  
    public String addStr(String str) {  
        return "This is the:" + str;  
    }  
    public static void main(String[] args) throws Exception {  
        Class<?> classType = Reflection2.class;  
        // Object reflection2 = classType.newInstance();  
        Constructor<?> constructor = classType.getConstructor(new Class[] {});  
        Object reflection2 = constructor.newInstance(new Object[] {});  
        // 通过反射进行反射出类中的方法  
        Method sumMethod = classType.getMethod("sum", new Class[] { int.class,  
                int.class });  
        //invoke方法的值永远只是对象  
        Object result1 = sumMethod.invoke(reflection2, new Object[] { 6, 10 });  
        System.out.println((Integer) result1);  
        Method addStrMethod = classType.getMethod("addStr",  
                new Class[] { String.class });  
        Object result2 = addStrMethod.invoke(reflection2,  
                new Object[] { "tom" });  
        System.out.println((String) result2);  
    }  
}  

//源代码片段来自云代码http://yuncode.net