java例程练习（StringBuffer类）

public class TestBuffer {//StringBuffer存储变长的字符序列 ，String类是不可变长的字符序列 public static void main(String[] args) { String s = "Mircosoft"; char [] c = {'a', 'b', 'c'}; StringBuffer sb1 = new StringBuffer(s); sb1.append('/').append("IBM").append('/').append("Sun"); System.out.println(sb1); StringBuffer sb2 = new StringBuffer("数字"); for(int i = 0; i < 9; i++) { sb2.append(i); } System.out.println(sb2); sb2.delete(8, sb2.length()).insert(0, c); System.out.println(sb2); System.out.println(sb2.reverse()); } }