OOP Concepts

• It is a programming methodology that defines objects whose behaviors and interactions accomplish a given task.

  Object-Oriented Programming
• ·       An object has characteristics or

  attributes
• ·       The values of an object’s attributes give the object a


  state
• The actions that an object can take are called

  behaviors
• ·       Each behavior is defined by a piece of Java code called a method.
• ·       Objects of the same kind are said to have the same data type and belong to the same class.
• defines a kind of object

  class
• it is a blueprint for defining the objects.

  class
• ·       The data type of an object is the name of its class.
• ·       allows objects of a class to take on the properties of objects from another class.

  inheritance
• used to avoid the repetition of programming instructions for each class.

  INHERITANCE
• ·       To apply inheritance between classes, the ____-keyword is used.

  extends
• is a program component that contains the heading for a number of public methods.

  interface
• ·       interface is used by another class through the ___ keyword.

  IMPLEMENT
• ·       is a collection of related classes and interfaces that have been grouped together into a folder.

  PACKAGE
• ·       You can use all the classes that are in a package within any program or class definition by placing an

  ___ statement.

  import