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

String a="one";
String b="two";

a = a.concat("#" + b);
b = a.split("#")[0];
a = a.split("#")[1];

This will work as long as your string doesn't contain the # character in them. Feel free to use any other character instead.

You could use a possible Unicode character, like "\u001E" instead of the #.