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Example  : How to swap two numbers in a single line in java.

import java.util.Scanner;

class Main {
    public static void main(String args[]) {

        int a, b;
        Scanner sc = new Scanner(System.in);

        System.out.print("Enter two numbers");
        a = sc.nextInt();
        b = sc.nextInt();

        a = a ^ b ^ (a = b);

        System.out.println(a);
        System.out.println(b);

    }
}
Java

Output:

Enter Two Numbers :
 5 
 10 
10 
5