i want to extend a class, but i am unable to do this........here is my code.......plz check it n tell if there are any errors

public class MyExercise{
    int e;
    public void mul(int c, int d){
        e = c*d;
    }
    public int getMul(){
        return e;
    }
    public class ChildClass extends MyExercise{
        public void childMethod(){
            System.out.println("Inside Child Class");
        }
    }
    public static void main(String args[]){
        MyExercise myObj = new MyExercise();
        myObj.mul(10,20);
        int get = myObj.getMul();
        System.out.println(get);
        ChildClass obj = new ChildClass();
        obj.childMethod();

    }
}

after
 public int getMul(){
        return e;
    }
put a '}'

remove the end '}' also

jomet.
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dont be afraid of failure and dont abandon it.
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