Java is a most popular, robust, secure, platform independent and multithreading based high level programming language, because of this it is preferably used by many programmers.

1. How do I use inheritance in Java?

2. Index
What is Java inheritance
Example of Java inheritance
Keywords Extends

3. Prepared By
Preeti

4. Java class supports reuse through inheritance and composition. This
two-part tutorial shows you how to use inheritance in your Java
programs. In Part 1, Learn how to use the extends keyword to derive a
child from a parent class. In part 2 you will visit java.long.Object, this is
the superclass of Java, from which any other class inherits.
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To complete your knowledge about inheritance, check my Java tip, if
you want to use composition vs inheritance.
Learn why composition is an important addition to inheritance and how
to use it to avoid encapsulation problems in your Java programs.

5. To complete your knowledge about inheritance, check my Java tip, if
you want to use composition vs inheritance.
Learn why composition is an important addition to inheritance and how
to use it to avoid encapsulation problems in your Java programs.
Java Inheritance: Two Examples
Inheritance is a programming construct that software developers use to
create is-a relationships between categories.
By inheritance, we can derive more specific categories from more
generic ones. The more specific category is a type of generic category.
For example, a current account is a type of account where you can
deposit and withdraw funds.
Similarly, a truck is a kind of vehicle for towing large objects.

6. Inheritance can descend through multiple levels, leading to more and
more specific categories.
As an example, figure shows the number 1 car and truck inherit from
vehicle; Combi inherit from car, and garbage truck inherit from truck.
Arrows show from more specific "child" categories (below) to less
specific "parents"categories (above).
Figure 1. A few inheritance hierarchies are rooted in the common
vehicle category
This example demonstrates single inheritance in which a child category
inherits state and behavior from an immediate parent category.

7. In contrast, multiple inheritance a child category to inherit state and
behavior from two or more parent categories.
The hierarchy in Figure 2 illustrates the Multiple Inheritance.

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Figure 2.
Hovercraft multiply inherits from land vehicle and watercraft categories
Categories are described by classes.
Java supports single inheritance through class extension, in which a
class inherits directly accessible fields and methods from another class
by extending this class. However,
Java does

9. When you view an inheritance hierarchy, you can easily detect multiple
inherits by the presence of a diamond pattern.
Figure 2 shows this pattern in the context of vehicle, land vehicle,
watercraft and hovercraft.

10. The keyword extends
Java supports the class extension using the extends keyword. If present,
extends specifies a parent-child relationship between two classes.
Below I use extended to a relationship between the classes vehicle and
car, and then between Account and SavingsAccount:

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