Interview Q&A / Object-Oriented Programming

1. What is the difference between == and equals() in Java?

   == compares references for objects (are they the same object?) and values for primitives. equals() compares content, but only if the class overrides it; the default version behaves like ==.

   BeginnerQuick answer1 min read
2. What is the difference between a class and an object?

   A class is a blueprint that describes the fields and methods something will have. An object is one real instance built from that blueprint, with its own values stored in memory.

   BeginnerQuick answer1 min read