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 |
Is break statement can be used as labels in java?
How do we access static members in java?
What is the need to implement Serializable interface (with no methods) for objects which are to be serialized ? We can write our own functionality which writes objects to streams then why we need to implement and tell JVM that which objects can be serialized.
What is an escape character in java?
What is java and their uses?
What is the new line character?
What are the differences between heap and stack memory in java?
What is finalize()?
What are the topics in advance java?
What is arguments in java?
What are the characteristics provided in jdk1.6 apart from other versions?
What is arraylist class in java?