[java] Is Constructor Overriding Possible?

It is never possible. Constructor Overriding is never possible in Java.

This is because,

Constructor looks like a method but name should be as class name and no return value.

Overriding means what we have declared in Super class, that exactly we have to declare in Sub class it is called Overriding. Super class name and Sub class names are different.

If you trying to write Super class Constructor in Sub class, then Sub class will treat that as a method not constructor because name should not match with Sub class name. And it will give an compilation error that methods does not have return value. So we should declare as void, then only it will compile.


Have a look at the following code :

Class One
        {
         ....
         One() { // Super Class constructor
          .... 
        }

        One(int a) { // Super Class Constructor Overloading
          .... 
        }
 }

Class Two extends One
                   {
                    One() {    // this is a method not constructor 
                    .....      // because name should not match with Class name
                   }

                    Two() { // sub class constructor
                   ....  
                   }

                   Two(int b) { // sub class constructor overloading
                   ....
                  }
 }  

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