Object in OOPs

 

Objects

An object means a thing that can be presented physically. In other words, an object is a touchable entity that may show some well defined behavior.

According to famous software architect, Grady Booch, an Object has the Following characteristics:

• State
• Behavior
• Identity

For Example:

A car has fulfills these requirements to become an object. A car has the following characteristics:

• A car can have various states, such as moving and stationary.
• It can show various behaviors, such as accelerating, decelerating, or turning.
• It also has an identity, such as unique registration number.

Note:

• Two objects may have the same behavior and state, but they can never have same identity. The identity of an object does not change in its lifetime.
• An object can be associated with multiple methods, each having a set of instructions. Each of these methods has a unique purpose and helps implement a particular behavior of the object.