Answer / manoj kumar verma allahabad(ba

Abstract class shows kins of relationship.it is the impure
abstract.Abstract class can have method with body or
without. Abstract class can not be instantiated.e.g. Object
nahi ban sakta abstract class ka.

for example :-
abstract class Shape
{
abstract void area(); // No body compulsory to be
overriding
void show()
{
System.out.println("Shape is the show");
}
}
class circle extends Shape
{
void area()
{

}
void show()
{
System.out.println("Show the circle");
}
}
class Testabstract
{
public static void main(String ar[])
{
circle c1=new Shape(); // error object of
abstract class cannot be made
circle c2=new circle();
c2.area();
c1.show();
}
}

Answer / micheal b

abstract means wrapping the data in sigle unit
class is a user define data type

Answer / ramyathillainathan

We can indicate that a method must always be redefined in a sub class , thus making overriding compulsory. This is done using the modifier keyword abstract in the method definition.
example;
abstract class Shape
{
------------
------------
Abstract void draw();
------------
---------------
}

what is the abap/4

1 Answers  

---

Busy waiting is a method whereas a taskwaits for a given event by continiously checking for an event to occur. What is the main problem with this approach

0 Answers  

---

how many keywords are present in "c"?

18 Answers   Assurgent, Cynosure Software, IBM,

---

what is page hit in operating system?

5 Answers   TCS,

---

I want to pass .pdf files as OlE Object to crystal report through VB6. Please any one guid me...

0 Answers  

---

hoe to data grid use in sql server 2000?

0 Answers   HCL,

---

What is Negative testing?

0 Answers  

---

In Bioinformatics, a DNA sequence is made up of a combination of 4 characters, namely “A,C,G,T”. A subsequence of a given sequence of characters a0, a1, …an- 1, is any subset of the characters taken in order, of the form ai0 , ai1 ,…..aik-1 where 0 &#8804; i0 <i1….< ik-1 &#8804; n-1. For example in the sequence “A,C,G,T,G,T,C,A,A,A,A,T,C,G”, we can have subsequences “A,G,T”, “A,C,A,A” and many more. A subsequence is palindromic if it is the same whether read left to right or right to left. For instance, the sequence “A,C,G,T,G,T,C,A,A,A,A,T,C,G”, has many palindromic subsequences, including “A,C,G,C,A” and “A,A,A,A” (on the other hand, the subsequence “A,C,T” is not palindromic). Devise an algorithm (using dynamic programming) that takes a sequence of characters X[0 … n-1] from the alphabet set (A,C,G,T) and returns the (length of the) longest palindromic subsequence. Implement the algorithm in an appropriate language.

1 Answers  

---

What is web.configuration? how is it work? & wht is use this?

0 Answers  

---

What is the language used for Artificial Intelligence?

1 Answers  

---

HOW TO FIND NUMBER OF TWOS IN N!(N FACTORIAL)??

0 Answers  

---

Who is providing best mainframes online training in Hyderabad

1 Answers  

---