public class 位运算加解密 {

public static void main(String[] args) { System.out.println("请输入要加密的字符串:"); Scanner sc = new Scanner(System.in); String s = sc.nextLine(); char[] arr = s.toCharArray();//把字符串转换为char 数组 for (int i = 0; i < arr.length; i++) { //把便利的每个都做位运算，然后在强制转换为char数组 arr[i] = (char) (arr[i]^32); } //new String(arr) 是把数组当字符串显示 System.out.println("加密后是 :"+new String(arr)); }

}