{"id":7768,"date":"2018-02-10T11:03:48","date_gmt":"2018-02-10T11:03:48","guid":{"rendered":"https:\/\/data-flair.training\/blogs\/?p=7768"},"modified":"2026-05-18T16:26:53","modified_gmt":"2026-05-18T10:56:53","slug":"method-overloading-in-java","status":"publish","type":"post","link":"https:\/\/data-flair.training\/blogs\/method-overloading-in-java\/","title":{"rendered":"Method Overloading in Java with Example"},"content":{"rendered":"

In Java Polymorphism<\/a><\/strong><\/em>, we heard the term Method Overloading, which allows the methods to have a similar name but with a difference in signatures, which is based on the number or type.\u00a0Method Overloading in Java supports compile-time (static) polymorphism.<\/strong><\/em><\/p>\n

In this article, we will talk about Method Overloading with its rules and methods. We will discuss each and every concept with an example for a clear understanding. So, let’s start!<\/p>\n

Example of Methods Overloading in Java-<\/strong><\/p>\n

class Calculator\r\n{\r\n  int addition(int operand1, int operand2)\r\n  {\r\n    return operand1+operand2;\r\n  }\r\n  int  addition(int operand1, int operand2, int operand3)  \r\n  {\r\n    return operand1+operand2+operand3;\r\n  }\r\n}\r\npublic class CompileTimePolymorphism\r\n{\r\n  public static void main(String args[])\r\n  {\r\n    Calculator obj = new Calculator();\r\n    System.out.println(\"Addition of two operands is \"+obj.addition(10, 20));\r\n    System.out.println(\"Addition of three operands is \"+obj.addition(10, 20, 30));\r\n  }\r\n}\r\n<\/pre>\n
Output-<\/strong><\/p>\n
\"Overloading<\/a><\/p>\n
Different Methods of Method Overloading in Java<\/h3>\n
Method overloading can be done by 3 methods in Java<\/a><\/strong><\/em>:<\/p>\n
By some parameters in the two methods.<\/h4>\n
The following example shows how method overloading is done by using a different number of parameters<\/p>\n
class Calculator\r\n{\r\n  int addition(int operand1, int operand2)\r\n  {\r\n    return operand1+operand2;\r\n  }\r\n  int  addition(int operand1, int operand2, int operand3)  \r\n  {\r\n    return operand1+operand2+operand3;\r\n  }\r\n}\r\npublic class CompileTimePolymorphism\r\n{\r\n  public static void main(String args[])\r\n  {\r\n    Calculator obj = new Calculator();\r\n    System.out.println(\"Addition of two operands is \"+obj.addition(10, 20));\r\n    System.out.println(\"Addition of three operands is \"+obj.addition(10, 20, 30));\r\n  }\r\n}<\/pre>\n
Output-<\/strong><\/p>\n
\"Overloading<\/a><\/p>\n
Recommended Reading – DataTypes in Java with Examples<\/a><\/strong><\/em><\/p>\n
By the data types of the parameters of the methods<\/h4>\n
In the following example, method addition()<\/strong> is overloaded based on the data type of the parameters. We have two methods with the name addition(), one with the parameter of int type<\/strong> and another method<\/a><\/strong> with the parameter of string type<\/strong>.<\/p>\n
class Calculator\r\n{\r\n  void addition(int operand1, int operand2)\r\n  {\r\n    System.out.println(operand1+operand2); \r\n  }\r\n  void  addition(String alphabet)  \r\n  {\r\n    System.out.println(alphabet); \r\n  }\r\n}\r\npublic class CompileTimePolymorphism\r\n{\r\n  public static void main(String args[])\r\n  {\r\n    Calculator obj = new Calculator();\r\n    obj.addition(10, 20);\r\n    obj.addition(\"DataFlair\");\r\n  }\r\n}\r\n<\/pre>\n
Output-\"By-data-types-of-the-parameters-of-methods\"<\/a><\/strong><\/p>\n
By order of the parameters of the methods<\/h4>\n
Here, both methods have a different sequence of data types in the argument list. The first method has an argument list as (String, char), and the second has (int, String, char). Since the sequence is different, the method can be overloaded without any errors.<\/p>\n
It’s the right time to explore Command Line Arguments in Java<\/a><\/strong><\/em><\/p>\n
public class MethodOverloadingExample2\r\n {\r\n  void record(String studentName,char grade)\r\n  {\r\n    System.out.println(\"Student name is \"+studentName);\r\n    System.out.println(\"Student grade is \"+grade);\r\n  }\r\n  void record(int id,String studentName,char grade)\r\n  {\r\n    System.out.println(\"Student ID is \"+id);\r\n    System.out.println(\"Student name is \"+studentName);\r\n    System.out.println(\"Student grade is \"+grade);\r\n  }\r\n  public static void main(String[]args)\r\n  {\r\n    MethodOverloadingExample2 Obj=new MethodOverloadingExample2();\r\n    Obj.record(\"Renuka\",'B');\r\n    Obj.record(8, \"Bhumika\", 'A');;\r\n\r\n  }\r\n}<\/pre>\n
Output-<\/strong><\/p>\n
\"Method-Overloading-Example\"<\/a><\/p>\n
Important Points of Method Overloading in Java<\/h3>\n
Advantage of Method Overloading<\/h4>\n