What is inheritance in java

Inheritance in java

Inheritance in Java is a mechanism in which one object acquires 
all the properties and behaviors of a parent object.
It is an important part of OOPs (Object Oriented programming system).

What is inheritance in java

Inheritance is the mechanism where the object of one class acquires the property of the object of another class.

Abstract class java

Abstract classes have some special features:

it's impossible to create an instance of an abstract class;
an abstract class can contain abstract methods that must be implemented in non-abstract subclasses;
it can contain fields and non-abstract methods (including static);
an abstract class can extend another class, including abstract;
it can contain a constructor.

Inheritance in java

class Arithmetic {

}
class Adder extends Arithmetic {
    public int add(int a, int b) 
    {
        return a+b;
    }
}

Source: hackerrank.com

Inheritance in Java

Java Inheritance (Subclass and Superclass)
In Java, it is possible to inherit attributes and methods from one class to another. We group the "inheritance concept" into two categories:

subclass (child) - the class that inherits from another class
superclass (parent) - the class being inherited from
To inherit from a class, use the extends keyword.

Inheritance in java

class Arithmetic {
    Arithmetic() {}
}

class Adder extends Arithmetic {
    Adder() {}
    
    int add(int a, int b) {
        return a + b;
    }
}

-1

Source: hackerrank.com

Similar codes

1 vote249 views1 answer
Java inline conditional
Java
0 vote252 views2 answers
Program type already present: android.support.v4.app.INotificationSideChannel
Java
0 vote248 views1 answer
Can the method local inner class object access method local variables
Java
5 votes258 views1 answer
Declare function in java
Java
0 vote251 views1 answer
What Is Spring Boot and What Are Its Main Features?
Java
0 vote237 views1 answer
How to use base64.getdecoder() android
Java
5 votes269 views2 answers
Java print type of object
Java
1 vote269 views1 answer
Spring boot
Java Spring
2 votes314 views1 answer
Cannot lock java compile cache as it has already been locked by this process
Java
0 vote237 views2 answers
Android Execution failed for task ':app:processReleaseManifest' Could not get unknown property 'manifestOutputDirectory' for task
Java