Constructor Overloading with Example

Constructor Overloading

Constructor overloading in java allows to have more than one constructor inside one Class. 

Example Program

class Demo

{

                       Demo()

                       {

                        System.out.println("Constructor without parameter");

                       }

                       Demo(int a)

                       {

                        System.out.println("Constructor with integer parameter "+a);

                       }

                       Demo(float b)

                       {

                        System.out.println("Constructor with float parameter "+b);

                       }

}

public class Democonover {

                       public static void main(String args[])

                       {

                        Demo obj1=new Demo();

                        Demo obj2=new Demo(4);

                        Demo obj3=new Demo(5.9f);

                       }

}

Output

D:\> javac Democonover.java

D:\>java Democonover

Constructor without parameter

Constructor with integer parameter 4

Constructor with float parameter 5.9

Explanation