1 package StringBuilder;
2 /*
3 StringBuilder的添加和反转方法
4 public StringBuilder append(任意类型):添加数据,并返回对象本身
5 public StringBuilder reverse():返回相反的字符序列
6 */
7 public class StringBuilderDemo02 {
8 public static void main(String[] args) {
9 //创建对象
10 StringBuilder sb = new StringBuilder();
11
12 // public StringBuilder append(任意类型):添加数据,并返回对象本身
13 StringBuilder sb1 = sb.append("HelloWorld");
14
15 // System.out.println("sb:"+sb);
16 // System.out.println("sb1:"+sb1);
17 // System.out.println(sb==sb1);
18
19 // sb.append("hello");
20 // sb.append("world");
21 // sb.append(100);
22 //
23 // System.out.println("sb:"+sb);
24
25 //链式编程
26 sb.append("hello").append("world").append(986);
27 System.out.println("sb:"+sb);
28
29 //public StringBuilder reverse():返回相反的字符序列
30 sb.reverse();
31 System.out.println("sb:"+sb);
32
33 }
34 }