java学习之stringbuffer练习2，反转

package com.ifenx8.study;

import java.util.Scanner;

public class Demo_4 {

	/**
	 案例演示
* 
		需求：把字符串反转
			举例：键盘录入"abc"		
			输出结果："cba"
			
		用StringBuffer的功能实现	
	 */
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		System.out.println("请输入一个字符串");
		String s = sc.nextLine();
		String s1 = revString(s);
		System.out.println(s1);
	}
	public static String revString (String line){
		StringBuffer sb = new StringBuffer(line);
		sb.reverse();
		return sb.toString();
	}
}