Answer Posted / vinoth kumar

Yes,
we can define it in the abstract class itself.But it invoke
only by super() in sub class constructor.

Example:

abstract class AbsConstCheck{
AbsConstCheck(){
System.out.println("I AM WORKING AbsConstCheck");
}//some other methods declaration
}
class Sub extends AbsConstCheck{
sub(){
super();//calling abstract class constructor
System.out.println("I AM WORKING Sub");
}
}
class Main{
public static void main(String vin[]){
Sub s=new Sub();//calling sub,abstract class constructor
}
}

Output:

I AM WORKING AbsConstCheck
I AM WORKING Sub

How does thread synchronization occurs inside a monitor?

1058

---

What’s the difference between the methods sleep() and wait()?

966

---

What is type inference in java8?

995

---

Is null in java?

958

---

What are static initalizers in java ?

968

---

What ide should I use for java?

972

---

What is charat java?

911

---

What are advantages and disadvantages of OOPs?

1070

---

List any five features of java?

974

---

Can we extend a class with private constructor?

949

---

Define max and min heap, also the search time of heap.

992

---

how we can create packages in java?

922

---

What is the generic class?

916

---

Is it possible to use string in the switch case?

1004

---

What is getclass () getname () in java?

1108

---