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";//creates "one" object on heap
String b = "two";// creates "two" object on heap
System.out.printf("a is %s , b is %s%n",a,b);
a = "two";// will not create new "two" object & now a is pointing to "two" object
b = "one";// will not create new "one" object & now b is pointing to "one" object
System.out.printf("a is %s , b is %s%n",a,b);