具體細節見：https://blog.csdn.net/wwt18811707971/article/details/78291490

package 實現兩個變數的互換;


import java.util.Scanner;

public class 實現兩個變數的互換 {
    public static void main(String[] args)
    {
        Scanner scan = new Scanner(System.in);
        
        System.out.println("請輸入變數 A 的值:");
        
 
long A = scan.nextLong();
        
        System.out.println("請輸入 B 的值:");
        long B = scan.nextLong();
        
        System.out.println("A ="+A+"\t B ="+B);
        
        System.out.println("執行變數互換");
        
        A = A^B;
        B = B^A;
        A = A^B;
        
        System.out.println(
 
"A ="+A+"\t B ="+B);
    }
}