Does a class inherit the constructor of its super class?if
it does, how can you hide that constructor? if it doesnot
how can you call it from the sub class?
Answers were Sorted based on User's Feedback
Answer / pandu
Hi ,
constructor is never been inherited from superclass to
subclass.
we can call the Super class constructor in Sub class
by using
Super();
that too this stement should be first line in method.
Best Regards.
| Is This Answer Correct ? | 10 Yes | 1 No |
Answer / hanu
there is an exceptional case for this.i.e when you call
derived class parameterised constructor and if you do not
call any of the super class constructor then bydefault the
superclass default constructor gets executed prior to the
derived argument constructor then the derived class
parameterised constructor gets executed.
example code:
class A
{
A()
{
System.out.println("in Class A");
}
A(int c)
{
System.out.println("in Class A"+c);
}
};
class B extends A
{
B()
{
System.out.println("in Class B");
}
B(int z)
{
System.out.println("in Class B"+z);
}
};
class Dead
{
public static void main(String[] args)
{
System.out.println("Hello World!");
//B b=new B();
B d=new B(20);
}
}
output:
---------- java ----------
Hello World!
in Class A
in Class B20
Output completed (0 sec consumed) - Normal Termination
| Is This Answer Correct ? | 1 Yes | 3 No |
What is linked hashmap and its features?
Can you sort a list in java?
What does split function do in java?
How does access modifiers work?
What is a java lambda expression?
Can we call virtual funciton in a constructor ?
extending thread class or implementing runnable interface. Which is better? : Java thread
Why volatile is used in java?
What best practices should you follow while writing multithreaded code in java?
Can we have a try block without catch block?
How are java objects passed to a method and what are native methods?
Does any tag exists in HTML to upload and download files ?