package com.util;
public class stringbuffer {
    public static void main(String[] args){
        StringBuffer buffer = new StringBuffer();
        //append 字符串添加
        buffer.append("test");
        buffer.append(321+"\n").append("!!!");
        buffer.append(true);
        System.out.println(buffer);
        //reverse()字符串翻转
        buffer.reverse();
        System.out.println(buffer);
        //insert()任意位置添加字符串
        buffer.insert(0, "insert");
        System.out.println(buffer);
        //replase()字符串替换
        buffer.replace(0,99,"http://baidu.com.cn");
        System.out.println(buffer);
        //substring()字符串截取
        buffer.substring(0,3);
        //delete()字符串删除
        buffer=buffer.delete(9, 12);
        //查找指定的内容是否存在
        System.out.println(buffer);
        //indexof()字符串查找
        System.out.println(buffer.indexOf("ba"));
    }
}