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 name = "george";
String name2 = "mark";
System.out.println(name+" "+name2);
System.out.println(name.substring(name.length()) + name2 +  " "+ name );

Here substring(); method returns empty string. hence , names can be appended.