两变量值互换(三个方法)

Change.java

public class Change{

  public static void main(String[] args){
	
	
		java.util.Scanner input = new java.util.Scanner(System.in);
				
		System.out.println("本程序交换数字x和y的值!\n");
		System.out.println("请您分别输入数字x和y的值，并以回车结束回车 ");
			
		int x = input.nextInt();
		int y = input.nextInt();
		
		System.out.println("您输入的数字是: \n"+"x = "+x+"\ny = "+y);
		
		int c;
		c = x;
		x = y;
		y = c;
		
		System.out.println("恭喜您！成功交换x和y的值："+"\nx = "+x+"\ny = "+y);
		
	
	}

}

Change2.java

public class Change2{
 
  public static void main(String[] args){
	
		java.util.Scanner input = new java.util.Scanner(System.in);
		
		System.out.println("本程序用来交换x和y的值");
		System.out.println("请您分别输入数字x和y的值，并以回车结束回车 ");
		int x = input.nextInt();
		int y = input.nextInt();
		
		System.out.println("您输入的x和y的值分别为："+"\nx = "+x+"\ny = "+y);
		
		x = x + y;
		y = x - y;
		x = x - y;
		
		System.out.println("恭喜您！成功交换x和y的值："+"\nx = "+x+"\ny = "+y);
	
	}
 
}

Change3.java

public class Change3{
 
  public static void main(String[] args){
	
	java.util.Scanner input = new java.util.Scanner(System.in);
		
		System.out.println("此程序交换两个变量的值");
		System.out.println("请您分别输入变量a，b的值，并以回车结束");
		int a = input.nextInt();
		int b = input.nextInt();
		
		System.out.println("您输入的变量a,b的值分别为: "+"\na = "+a+"\nb = "+b);
		
		a = a^b;
		b = a^b;
		a = a^b;
		
		System.out.println("恭喜您，成功交换变量a，b的值："+"\na = "+a+"\nb = "+b);
		
	
	}
 
}