Java final关键字修饰变量Test

package com.test;
/**
 * final修饰一个变量练习
 * @author Mrjiao
 *
 */
public class FinalA {
    
    private final static StringBuffer A=new StringBuffer("I have final , Who can change me？");
    
    public static void main(String[] args){
        //编译出错
        //A=new StringBuffer("I can change you ,Oh,No,that why!!!");
        System.out.println(A);
        A.append("I can change you,haha!");//所以final关键字修饰一个变量时，是指引用变量不能被改变！！！
        System.out.println(A);
    }
}