15章示例8

public class H {/** * @param args */public static void main(String[] args) {// TODO Auto-generated method stubStringBuffer sb = new StringBuffer("青春无悔");        int num=110;        //在字符串后面追加字符串        StringBuffer sb1=sb.append("我心永恒");        System.out.println(sb1);        //在字符串后面追加字符        StringBuffer sb2=sb1.append('啊');        System.out.println(sb2);        //在字符串后面追加整形数字        StringBuffer sb3=sb2.append(num);        System.out.println(sb3);        }}