Page 275 - PowerPoint Presentation

CAVITE STATE UNIVERSITY
TRECE MARTIRES CITY CAMPUS
Department of Information Technology DCIT 111 - Advanced Programming

class Employee {
double salary = 40000.00;

}
public class Programmer extends Employee { // by using ‘extends’ keyword, you can inherit
int bonus = 1000; // the properties of class Employee
}
Public class TestInheritance {
public static void main(String[]args){
Programmer Programmer1 = new Programmer();
System.out.println(“Programmer’s Salary is: “ + Programmer1.salary);
System.out.println(“Programmer’s Bonus is: “ + Programmer1.bonus);
} }

Types of Inheritance in Java
On the basis of class, there can be three types of inheritance in java: single, multilevel
and hierarchical.
Class_A
Class_A Class_A
3. Hierarchical
1. Single 2. Multilevel
Class_B Class_B
Class_B Class_C

Class_C

In Java Programming, multiple and hybrid inheritance is supported through interface
only. We will learn about interfaces later.
Note: Multiple inheritance is not supported in Java through classes.

When one class inherits multiple classes, it is known as multiple inheritance.

Class_B Class_C Class_A
5. Hybrid
4. Multiple
Class_B Class_C
Class_A

Class_A
Single Inheritance Example
class Animal { public class TestInheritance2 {

void eat() { public static void main(String[]args) {
System.out.prntln(“The animal is eating…”);
} Dog D = new Dog();
}
class Dog extends Animal { D.eat();
void bark() { D.bark();
System.out.println(“The dog is barking…”); }
} }
}

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