what is the most reliable expresion for testing wheather the value of two string variables are same code example

Example: how to check to string are qual r not

String str1 = "rohith";
String str2 = "nikhil";
//compares if str1(rohith) is equal to str2(nikhil)
System.out.println(str1.equals(str2));
//prints false as str1!=str2