How can you invoke a defined method of an abstract class?

by instantiated. do you mean declaring it? i’m new to java and i don’t like the book that we have. I’m looking at other ways to learn it.

A code snippet for your reference:
http://techguru.yakkoo.com/programming-concept-tutorials/2011/08/how-can-you-invoke-a-defined-method-of-an-abstract-class/

public abstract void myAbstractMethod() ;

public static void main(String[] args) {

// Not permitted
// MyAbstractClass instance1 = new MyAbstractClass ();
}
}

public class ConcreteSubclass extends MyAbstractClass {

public abstract void myAbstractMethod() {
System.out.println(“Called from concrete class”);
}

public static void main(String[] args) {

ConcreteSubclass instance1 = new ConcreteSubclass ();
instance1.myAbstractMethod();
}
}

in ConcreteSubclass the myAbstractMethod cannot have abstract keyword