abstract classes

[Mona Gadkari]

Hello,
Can an abstract class have -- no abstract method. What I mean is, if we declare an abstract class is it legal to have no method which is abstrtact.

[Rajeshwari Natarajan]

Yes..its perfectly valid to have an abstract class without any abstract methods.
You can also bootstrap the JVM using main method in the abstract class.
However u can't instantiate an object of the class since its abstract.

public abstract class Test
{
public void meth()
{
          //implementation
}
public static void main(String args[])
{
System.out.println("helo from abstact class");
}
}

[Vicken Karaoghlanian]

hi Mona,
An abstract class is not a complete class, that is why you can't instantiate it, they exist only to be extended. The answer to your question is yes, as Rajeshwari suggested.
But be carefully, if there is at least one abstract method in your class then you MUST declare that class abstract.
Hope this helps.

[Mona Gadkari]

hello,
Thanks Vicken and Rajeshwari.