Polymorphism : Method Overloading

In this tutorial you will learn one of polymorphism concept that is method overloading with example in Java 7.

Polymorphism : Method Overloading

Encapsulation : Method Overloading

In this tutorial you will learn one of polymorphism concept that is method overloading with example in Java 7.

Method Overloading:

Method overloading, also called function overloading. It is one of polymorphism concept. You can define more than one method of same name within one class but the parameters declaration or return types are different.

Example :

Here we overloading method testValue() as method name is same but parameter declaration and return type is different. In first void testValue() we are simply printing some text. In next void testValue(int a) printing int value of a. In last  int testValue(int a,int b) we are passing two arguments of int type and returning int type sum of both numbers. So you can see we used same function name but each time parameter declaration or return type is  different. This is concept of method overloading.

class Overload {
void testValue() {
System.out.println("It is just a test");
}

void testValue(int a) {
System.out.println("It is int value : " + a);
}

int testValue(int a, int b) {
return a + b;
}
}

public class MethodOverloading {
public static void main(String[] args) {
Overload overload = new Overload();
overload.testValue();
overload.testValue(20);
System.out
.println("Sum of two numbers : " + overload.testValue(30, 40));
}
}

Output :

It is just a test
It is int value : 20
Sum of two numbers : 70

Tutorials

  1. Java SE 7
  2. Strings in Switch statement
  3. The try-with-resource Statement
  4. Multiple Exception Catching
  5. Exceptions Rethrowing with Improved Type Checking
  6. Underscores in Numeric Literals
  7. Binary Literals
  8. What is JAVA Technology?
  9. JAVA7 : "Hello World" Example
  10. Java7 : OOPs Concepts
  11. Abstraction in Java 7
  12. Encapsulation in Java 7
  13. Inheritance in Java 7
  14. Polymorphism in Java 7
  15. Java 7 Language Fundamentals
  16. Variables In Java
  17. Polymorphism : Method Overloading
  18. Polymorphism : Method Overriding
  19. Data Types in Java 7
  20. Primitive Data Types
  21. Reference Data Types
  22. Arrays in java 7
  23. Operators in java 7
  24. Arithmetic Operators in java 7
  25. Unary Operators in java 7
  26. Relational Operators in java 7
  27. Logical Operators in java 7
  28. Bitwise Operators in java 7
  29. Assignment Operators in java 7
  30. Other Operators in java 7
  31. Expressions, Statements, and Blocks in java 7
  32. Control Flow Statements in java 7
  33. Decision-making Statements in java 7
  34. If statement in java 7
  35. Switch Statement in java 7
  36. Looping Statements in java 7
  37. For Loop Statement in java 7
  38. Do-while loop Statement in java 7
  39. While Loop Statement in java 7
  40. Branching Statements in java 7