xorop.java

Java面向对象编程(随书配套源代码) 阐述了面向对象编程的思想

package chapter4;
public class XorOp 
{
	public static void main(String[] args)
	{ 
        char p = 'A'; 
        int  k = 7;
        System.out.println("明文：" + p); 
 
        p = (char)(p^k); 
        System.out.println("密文：" + p); 
 
        p = (char)(p^k); 
        System.out.println("解码后：" + p); 
    } 
}