直接上代码: public class Traverse { public static void main(String[] args) { Scanner s = new Scanner(System.in); System.out.print("请输入一个字符串:"); String n = s.nextLine(); System.out.print("遍历结果:"); for (int i = 0; i < n.length(); i++) {//for循环遍历 System.out.print(n.charAt(i));//转换成字符输出 } }