• Java
    • JAXB Tutorial
      • What is JAXB
      • JAXB Marshalling Example
      • JAXB UnMarshalling Example
  • Spring Tutorial
    • Spring Core Tutorial
    • Spring MVC Tutorial
      • Quick Start
        • Flow Diagram
        • Hello World Example
        • Form Handling Example
      • Handler Mapping
        • BeanNameUrlHandlerMapping
        • ControllerClassNameHandlerMapping
        • SimpleUrlHandlerMapping
      • Validation & Exception Handling
        • Validation+Annotations
        • Validation+ResourceBundle
        • @ExceptionHandler
        • @ControllerAdvice
        • Custom Exception Handling
      • Form Tag Library
        • Textbox Example
        • TextArea Example
        • Password Example
        • Dropdown Box Example
        • Checkboxes Example
        • Radiobuttons Example
        • HiddenValue Example
      • Misc
        • Change Config file name
    • Spring Boot Tutorial
  • Hibernate Tutorial
  • REST Tutorial
    • JAX-RS REST @PathParam Example
    • JAX-RS REST @QueryParam Example
    • JAX-RS REST @DefaultValue Example
    • JAX-RS REST @Context Example
    • JAX-RS REST @MatrixParam Example
    • JAX-RS REST @FormParam Example
    • JAX-RS REST @Produces Example
    • JAX-RS REST @Consumes Example
    • JAX-RS REST @Produces both XML and JSON Example
    • JAX-RS REST @Consumes both XML and JSON Example
  • Miscellaneous
    • JSON Parser
      • Read a JSON file
      • Write JSON object to File
      • Read / Write JSON using GSON
      • Java Object to JSON using JAXB
    • CSV Parser
      • Read / Write CSV file
      • Read/Parse/Write CSV File – OpenCSV
      • Export data into a CSV File
      • CsvToBean and BeanToCsv – OpenCSV

JavaInterviewPoint

Java Development Tutorials

Multilevel Inheritance in Java with Example

August 10, 2015 by javainterviewpoint Leave a Comment

In Java Multilevel Inheritance sub class will be inheriting a parent class and as well as the sub class act as the parent class to other class. Lets now look into the below flow diagram, we can see ClassB inherits the property of ClassA and again ClassB act as a parent for ClassC. In Short ClassA parent for ClassB and ClassB parent for ClassC.Multilevel_Inheritance_in_Java
The ClassC inherits the members of ClassB directly as it is explicitly derived from it, whereas the members of ClassA are inherited indirectly into ClassC (via ClassB). So the ClassB acts as a direct superclass and ClassA acts as a indirect superclass for ClassC.

Example of Multilevel Inheritance

We have 4 class Person, Staff, TemporaryStaff and MultilevelInheritanceExample (Main class). Here Person class will be inherited by Staff class and Staff class will be again inherited by the TemporaryStaff class. TemporaryStaff class can access the members of both Staff class(directly) and Person class(indirectly).

package com.javainterviewpoint;
class Person
{
    private String name; 
    Person(String s) 
    {   
          setName(s); 
    } 
    public void setName(String s) 
    { 
      name = s; 
    } 
    public String getName() 
    { 
      return name; 
    } 
    public void display() 
    { 
      System.out.println("Name of Person = " + name); 
    } 
}
class Staff extends Person
{
    private int staffId; 
    Staff(String name,int staffId) 
    { 
      super(name); 
      setStaffId(staffId); 
    } 
    public int getStaffId() {
        return staffId;
    }
    public void setStaffId(int staffId) {
        this.staffId = staffId;
    }
    public void display() 
    { 
      super.display(); 
      System.out.println("Staff Id is  = " + staffId); 
    } 
}
class TemporaryStaff extends Staff
{
    private int days; 
    private int hoursWorked; 
    TemporaryStaff(String sname,int id,int days,int hoursWorked) 
    {      
       super(sname,id); 
       this.days  = days; 
       this.hoursWorked = hoursWorked; 
    } 
    public int Salary() 
    { 
        int salary = days * hoursWorked * 50;
        
      return salary;
    } 
    public void display() 
    { 
      super.display(); 
      System.out.println("No. of Days = " + days); 
      System.out.println("No. of Hours Worked = " + hoursWorked); 
      System.out.println("Total Salary = " + Salary()); 
    } 
}
public class MultilevelInheritanceExample 
{
    public static void main(String args[])
    {
        TemporaryStaff ts = new TemporaryStaff("JavaInterviewPoint",999,10,8);
        ts.display();
    }
}

Output :

Name of Person = JavaInterviewPoint
Staff Id is  = 999
No. of Days = 10
No. of Hours Worked = 8
Total Salary = 4000

Other interesting articles which you may like …

  • JVM Architecture – Understanding JVM Internals
  • Object and Object Class in Java
  • Difference between JDK, JRE and JVM
  • Components of Java Development Kit (JDK)
  • What is a Class in Java with Example
  • How to open .class file in Java
  • How to Set Classpath for Java in Windows
  • ClassNotFoundException Vs NoClassDefFoundError
  • How HashMap works in Java
  • How to make a class Immutable in Java
  • Polymorphism in Java – Method Overloading and Overriding
  • Types of polymorphism in Java
  • Types of Inheritance in Java

Filed Under: Core Java, Java, OOPs Tagged With: Inheritance, Java, Multilevel Inheritance, Multilevel Inheritance Example

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Java Basics

  • JVM Architecture
  • Object in Java
  • Class in Java
  • How to Set Classpath for Java in Windows
  • Components of JDK
  • Decompiling a class file
  • Use of Class.forName in java
  • Use Class.forName in SQL JDBC

Oops Concepts

  • Inheritance in Java
  • Types of Inheritance in Java
  • Single Inheritance in Java
  • Multiple Inheritance in Java
  • Multilevel Inheritance in Java
  • Hierarchical Inheritance in Java
  • Hybrid Inheritance in Java
  • Polymorphism in Java – Method Overloading and Overriding
  • Types of Polymorphism in java
  • Method Overriding in Java
  • Can we Overload static methods in Java
  • Can we Override static methods in Java
  • Java Constructor Overloading
  • Java Method Overloading Example
  • Encapsulation in Java with Example
  • Constructor in Java
  • Constructor in an Interface?
  • Parameterized Constructor in Java
  • Constructor Chaining with example
  • What is the use of a Private Constructors in Java
  • Interface in Java
  • What is Marker Interface
  • Abstract Class in Java

Java Keywords

  • Java this keyword
  • Java super keyword
  • Final Keyword in Java
  • static Keyword in Java
  • Static Import
  • Transient Keyword

Miscellaneous

  • newInstance() method
  • How does Hashmap works internally in Java
  • Java Ternary operator
  • How System.out.println() really work?
  • Autoboxing and Unboxing Examples
  • Serialization and Deserialization in Java with Example
  • Generate SerialVersionUID in Java
  • How to make a class Immutable in Java
  • Differences betwen HashMap and Hashtable
  • Difference between Enumeration and Iterator ?
  • Difference between fail-fast and fail-safe Iterator
  • Difference Between Interface and Abstract Class in Java
  • Difference between equals() and ==
  • Sort Objects in a ArrayList using Java Comparable Interface
  • Sort Objects in a ArrayList using Java Comparator

Follow

  • Coding Utils

Useful Links

  • Spring 4.1.x Documentation
  • Spring 3.2.x Documentation
  • Spring 2.5.x Documentation
  • Java 6 API
  • Java 7 API
  • Java 8 API
  • Java EE 5 Tutorial
  • Java EE 6 Tutorial
  • Java EE 7 Tutorial
  • Maven Repository
  • Hibernate ORM

About JavaInterviewPoint

javainterviewpoint.com is a tech blog dedicated to all Java/J2EE developers and Web Developers. We publish useful tutorials on Java, J2EE and all latest frameworks.

All examples and tutorials posted here are very well tested in our development environment.

Connect with us on Facebook | Privacy Policy | Sitemap

Copyright ©2023 · Java Interview Point - All Rights Are Reserved ·