Titlebook: Interactive Object Oriented Programming in Java; Learn and Test Your Vaskaran Sarcar Book 20161st edition Vaskaran Sarcar 2016 Java.Object

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嗎啡

Offstage

Inheritance,The main objective of inheritance is to promote reusability and eliminate redundancy (of code). Here a child class obtains the features of its parent class. By parent class we mean the class which is at the higher level in the class hierarchy compared to another class (which is termed as a child class)

竊喜

Organonitrile

Overriding,Sometimes we want to redefine or modify the behavior of our parent class. Method overriding comes into picture in such a scenario.

我不死扛

Interface,With the interface, we declare what we are going to implement but we are not specifying how we are going to that. These are similar to classes but with no instance variables and all of their methods are declared without a body (i.e. methods are actually abstract).

FAST

OOPs Concepts Revisited,Teacher says: Go through the following program and analysis.

健忘癥

Use of static keyword,Look at the output carefully. Look at the order of the output. You can see the statements in the static block printed on the top of output. Even before the execution of the static block, the static variables were initialized. Later static block changed the values (which are reflected clearly when we call the static method).

協(xié)議

medieval