adspace


Can you have a constructor in abstract class?

Answer Posted / jag bhushan

yes,
we can have constructor in abstract class.
But we can not make instance of the abstract class.
instead we can make a reference to that abstract class.
and when we make a new object of the class which extends
the abstract class, the constructor of abstract class get
called.

see the code for example:

public abstract class TestAbstract {

TestAbstract(){

System.out.println("...in abstract class'
constructor");
}

public abstract void showAbstract();
public void show(){
System.out.println("...in show");
}
}


public class Test extends TestAbstract{
public static void main(String[] args) {

TestAbstract ta = new Test(); //
constructor call
ta.showAbstract();
ta.show();

}

public void showAbstract() {
System.out.println("...in showAbstract");

}

}

Is This Answer Correct ?    22 Yes 3 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What do you mean by an interface in java?

1107


What is an object in java and how is it created?

1147


What is java string pool?

1088


What is a constructor overloading in java?

1131


Explain public static void main(string args[]) in java.

1084


What is a classloader in java?

1096


How to create a base64 decoder in java8?

1144


How to sort array in descending order in java?

999


Write a program to print count of empty strings in java 8?

1092


explain different ways of using thread? : Java thread

1089


What is the difference between equals() and == in java?

1047


What is parsing in java?

1046


Is minecraft 1.15 out?

1049


Write a java program to find the route that connects between Red and Green Cells. General Rules for traversal 1. You can traverse from one cell to another vertically, horizontally or diagonally. 2. You cannot traverse through Black cells. 3. There should be only one Red and Green cell and at least one of each should be present. Otherwise the array is invalid. 4. You cannot revisit a cell that you have already traversed. 5. The maze need not be in the same as given in the above example

2672


Write a program to find the whether a number is an Armstrong number or not?

1107