• 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

Java Method Overloading Example

January 12, 2015 by javainterviewpoint Leave a Comment

Method Overloading in Java allows you to have two or more methods with same method name but with the difference in the parameters. 
There are three possible cases in which we achieve it

  1. Difference in the number of parameters
  2. Difference in the datatypes
  3. Difference in the sequence of parameters.

Case 1: Difference in the number of parameters

Here the Overloading class has 3 disp() methods, here the number of parameters passed is different

class Overloading
{
	public void disp()
	{
		System.out.println("Inside First disp method");
	}

	public void disp(String val)
	{
		System.out.println("Inside Second disp method, value is: "+val);
	}

	public void disp(String val1,String val2)
	{
		System.out.println("Inside Third disp method, values are : "+val1+","+val2);
	}
}
public class MethodOverloadingExample 
{
	public static void main (String args[])
	{
		Overloading oo = new Overloading();
		oo.disp(); //Calls the first disp method
		oo.disp("Java Interview"); //Calls the second disp method
		oo.disp("JavaInterview", "Point"); //Calls the third disp method
	}

}

Output

Inside First disp method
Inside Second disp method, value is: Java Interview
Inside Third disp method, values are : JavaInterview,Point

Case 2: Difference in the datatypes

Here the Overloading class has 2 disp() methods with the same number of parameters but datatypes of the parameters will be different

class Overloading
{
	public void disp(int val1,int val2)
	{
		int val=val1+val2;
		System.out.println("Inside First disp method, values is : "+val);
	}

	public void disp(String val1,String val2)
	{
		System.out.println("Inside Third disp method, values are : "+val1+","+val2);
	}
}
public class MethodOverloadingExample 
{
	public static void main (String args[])
	{
		Overloading oo = new Overloading();
		
		oo.disp(1,2); //Calls the first disp method
		oo.disp("JavaInterview", "Point"); //Calls the second disp method
	}
}

Output

Inside First disp method, value is: 3
Inside Second disp method, values are : JavaInterview,Point

Case 3 : Difference in the sequence of parameters

Here the Overloading class has 2 disp() methods with the same number of parameters and same datatypes but the sequence will be different.

class Overloading
{
	public void disp(int val1,String val2)
	{
		int val=val1+val2;
		System.out.println("Inside First disp method, values are : "+val1+","+val2);
	}

	public void disp(String val1,int val2)
	{
		System.out.println("Inside Third disp method, values are : "+val1+","+val2);
	}
}
public class MethodOverloadingExample 
{
	public static void main (String args[])
	{
		Overloading oo = new Overloading();
		
		oo.disp(456,"JavaInterviewPoint"); //Calls the first disp method
		oo.disp("JavaInterviewPoint",123); //Calls the second disp method
	}
}

Output

Inside First disp method, value are : 456,JavaInterviewPoint
Inside Second disp method, values are : JavaInterviewPoint,123

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
  • Difference Between ClassNotFoundException Vs NoClassDefFoundError In Java
  • 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
  • Why Java does not supports Multiple Inheritance – Diamond Problem?

Filed Under: Core Java, Java, OOPs, Polymorphism Tagged With: Java, Method Overloading

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 ·