Hii Ragini


Abstact Class
---------------
1) Class can be specified with the keyword abstract;
2) Has atleast on abstract method and other are concrete method.
3) Can Inherit other abstract class
4) cannot be instantiated.
5) Can extend other class but not implements interface.

Interface
---------
1) class can be specified with the keyword public or default
2) All the methods are abstract
3) cannot be instantiated
4) can extends more than one interface
5) cant implement interface or extend class
6) Variable are final or static



AbstractClass
-------------

public abstract class AbstClass {

int no;
String ss;
boolean loc;
public void show(){
System.out.println("hello Ragini");
}

public abstract void aa();

}
Interface
-----------
public interface InterfaceA {
final int aa = 0;
static String ss="Raj";
public void setName();
public void show(String s);
}

try above example by putting some methods and variable as per specification I gave you. Then you got some better idea
if you need more than that refer sunjava site.

your previous problem solve or not,

Thanks
Rajanikant