How to swap two String variables without third variable

by Online Tutorials Library July 22, 2022

How do you swap two string variables without using third or temp variable in java?

File: SwapWithoutTemp .java

  public class SwapWithoutTemp {  public static void main(String args[]) {  String a = “Love”;  String b = “You”;  System.out.println(“Before swap: ” + a + ” ” + b);  a = a + b;  b = a.substring(0, a.length() – b.length());  a = a.substring(b.length());  System.out.println(“After : ” + a + ” ” + b);  }  }  

Output:

Before swap: Love You  After : You Love

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