学步园

public class Test {<br /> public static void main(String[] args){<br /> String s = "Moong";<br /> char[] a = {'a','b','c'};<br /> StringBuffer sb1 = new StringBuffer(s);<br /> sb1.append('/').append("IBM").append('/').append("Sun");<br /> System.out.println(sb1);<br /> StringBuffer sb2 = new StringBuffer("数字");<br /> for(int i = 0;i <=9;i++){<br /> sb2.append (i);<br /> }<br /> System.out.println(sb2);<br /> sb2.delete(8,sb2.length()).insert(0,a);<br /> System.out.println(sb2);<br /> System.out.println(sb2.reverse());<br /> }<br /> }