package com.ithema_15;
/*
     StringBuilder的添加和反转方法
        public StringBuilder append(任意类型)：添加数据，并返回对象本身
        public StringBuilder reverse():返回相反的字符序列
 */

public class StringBuilderDemo02 {
    public static void main(String[] args){
        //创建对象
        StringBuilder sb = new StringBuilder();

        //public StringBuilder append(任意类型)：添加数据，并返回对象本身
    //    StringBuilder sb2 = sb.append("hello");

    //    System.out.println("sb:" + sb);
    //    System.out.println("sb2:" + sb2);
    //    System.out.println(sb == sb2);
    //    sb.append("hello");
    //    sb.append("world");
    //    sb.append("java");
    //    sb.append(100);
        //链式编程
        sb.append("hello").append("world").append("java").append(100);
    //    sb.append("hello" +  "world" + "java" + 100);
        System.out.println("sb:" + sb);

        //public StringBuilder reverse():返回相反的字符序列
        sb.reverse();
        System.out.println("sb:" + sb);

    }
}