Comparision

what is the difference b/w == and .equals

at what sistuations we use these two.

Someware i hears one is deepcomparison and other one is shallow comparison!

what r that words.

The former is called the reference equality operator when both operands are a reference type (perhaps implicitly through autoboxing) - it compares the value of a reference to some other reference.

The latter is a method that is regularly used throughout the J2SE API Specification to determine "value equality" between two object instances. For example, in the Java collections API.

It might help to learn the difference between an object and an object reference:
http://jqa.tmorris.net/GetQAndA.action?qids=75&showAnswers=true

This is so not an advanced question! It's also an FAQ, isn't it?

Originally posted by Peter Chase:
This is so not an advanced question!

Indeed. Let's move this to Java in General (Beginner.)