Answer / amit singh

in java all function are virtual.only the function marked
with the final is not virtual.
means to say that if there is any method in super class and
you implemented this method in subclasses too.
then you can invoke on any subcalsses instances refer to
as a superclasses.and the method behaviour will change
according to subcallses instances .
class Amit
{
public void sleep()
{
System.out.println("amit slleping");
}
public static void main(String []args)
{
Amit a = new Amit();
a.sleep();
a = new Subclass1();
a.sleep();
a= new Subclass2();
a.sleep();
}
}

class Subclass1 extends Amit
{
public void sleep()
{
Sysetm.out.println("subclass sleeping");
}
}

class Subclass1 extends Amit
{
public void sleep()
{
System.out.println("subclass 2 sleeping");
}
}
so the output will be
amit sleeping
Subclass1 sleeping
Subclass2 sleeping

so the eat function behave virtualy for the differnt
instance .so this is called the virtual function .so don't
worry every function in java are virtual not the final
function.

types of applets?.

7 Answers   TCS,

---

Explain what pure virtual function is?

0 Answers   Aricent,

---

What is io stream in java?

0 Answers  

---

What is the difference between this() and super() in java?

0 Answers  

---

What are the uses of final, finally and finalize in java?

2 Answers   Agiline, FINO PayTech, HCL,

---

What are mutable classes?

0 Answers  

---

Define a java class.

1 Answers  

---

why java does not support mulitple inheritance directly?

3 Answers   TCS,

---

Why do we need variables?

0 Answers  

---

What is arraylist class in java?

0 Answers  

---

What’s the difference between callable and runnable?

0 Answers  

---

I have 100 records in a table with two rows. I need to display 10 records per page like Google Search. I need only the Logic(Pagination) in Pure Java. No JSP and all..Thanks in Advance...

2 Answers   Cybernet,

---