How to swap two string variables in Java without using a third variable

Question

How do I swap two string variables in Java without using a third variable, i.e. the temp variable?

String a = \"one\"
String b = \"two\"
String temp = null;
temp         


        

Answer 1

package com.core;

public class SwappingNoTemp {

public static void main(String[] args) {

    String a = "java";
    String b = "c";

    a = a + b;

    b = a.substring(0, a.length() - b.length());
    a = a.substring(b.length());

    System.out.println("swapping is a.." + a);
    System.out.println("swapping  is b.." + b);

}

}