JAVA反射机制事例二

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
public class Test {
/**
* @param args
*/
public static void main(String[] args) {
try {
Class cls = com.lwf.util.CommonUtil.class;
Object obj = cls.newInstance();
Method addMethod = cls.getMethod("add", new Class[]{int.class,int.class});
Object value = addMethod.invoke(obj, new Object[]{new Integer(12),new Integer(23)});
System.out.println((Integer)value);
} catch (InstantiationException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (SecurityException e) {
e.printStackTrace();
} catch (NoSuchMethodException e) {
e.printStackTrace();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}
}
}
package com.lwf.util;
public class CommonUtil {
public static void getName(){
System.out.println("this is a getName function");
}

public void getMethod(){
System.out.println("this is a getMethod funciton");
}

public int add(int m ,int n){
return m + n;

}
}