import java.util.Scanner; public class VariableExchange {     public static void main(String[] args){         System.out.println("请输入变量A的值");         Scanner scanner=new Scanner(System.in);         long A=scanner.nextLong();         System.out.println("请输入变量B的值");         Scanner scannerB=new Scanner(System.in);         long B=scannerB.nextLong();         System.out.println("A="+A+"\t"+"B="+B);         System.out.println("执行变量互换...");         A=A^B;         B=B^A;         A=A^B;         System.out.println("A="+A+"\t"+"B="+B);     } }