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inheritance in java



  • Inheritance allows a software developer to derive a new class from an existing one
  • The existing class is called the parent class, or super class, or base class
  • The derived class is called the child class or subclass.
  • As the name implies, the child inherits characteristics of the parent
  • That is, the child class inherits the methods and data defined for the parent class
  • To tailor a derived class, the programmer can add new variables or methods, or can modify the inherited ones
  • Software reuse is at the heart of inheritance
  • By using existing software components to create new ones, we capitalize on all the effort that went into the design, implementation, and testing of the existing software
  • Inheritance relationships often are shown graphically in a UML class diagram, with an arrow with an open arrowhead pointing to the parent class




Examples 
ex 1 

ex 2


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