A function is a module or block of program code which deals with a particular task. Making functions is a way of isolating one block of code from other independent blocks of code. Functions serve two purposes. They allow a programmer to say:"this piece of code does a specific job which stands by itself and should not be mixed up with anything else", and they make a block of code reusable since...
Friday, 26 December 2014
C - ARRAY
C Array is a collection of homogeneous value i.e.
belongings to the same data type. You can store group of data of same
data type in an array.
Array might be belonging to any of the data types.
Array size must be a constant value.
Always, Contiguous (adjacent) memory locations are used to store...
Sunday, 26 October 2014
Constructor in java
Java constructors are the methods which are used to initialize objects. Constructor has the same name as that of class, they are called or invoked when an object of class is created and can't be called explicitly.
Example of Constructor:public class A
{
public A() // constructor method
{
}
}
Types of Constructor 1. Default Constructor.
2. Parameterized Constructor.
1. Default Constructor.If...
Inheritance in java
Inheritance :
Inheritance can be defined as the process where one object acquires the properties of another. With the use of inheritance the information is made manageable in a hierarchical order.
Using inheritance you can create general class that defines common set of related items.This class can be inherited by other classes.
In the terminology of java , a class that is inherited is called...
Saturday, 28 June 2014
Oops Concept in Java
1. Data Hiding :
Hiding of the data , so that outside class can not access that data.By using the private modifier we can implement the data hiding.
The main advantage of data hiding is we can achieve the security.
Example of data hiding:
public class Account
{
private double balance=20000;...
Tuesday, 24 June 2014
Difference Between Array and Collection
Difference Between Array and Collection
Array
Collection
1. Size of arrays are fixed. 1. Size of collection are growable in nature we can increase or decrease the size as our requirement.
2. Memory point of view array concept not recommended to use.2. Memory point of view collection concept highly recommended to use.
3. Arrays can hold only homogeneous elements. 3. Collection...
Sunday, 22 June 2014
Difference Between Method Overloading and Overriding
Difference Between Method Overloading and Overriding
Method Overloading
Method Overriding
1. Method name must be same.
1. Method name must be same.
2. Method argument must be different.
2. Method arguments must be same.
3. Method signature must be different.
3. Method signature must be same.
4. Return type can be changed.
4. Return type must be same until 1.4v but after 1.5v co-variant...
Saturday, 21 June 2014
Difference Between Abstract class and Interface
Difference Between Abstract class and Interface.
Abstract Class
Interface
1. If we are talking about implementation but not completely (partially implementation) then go for abstract class.
1. If we does know anything about the implementation then we should go for the interface.
2. Every method present in abstract class need not be abstract ,it can be not abstract also.
2. Every method present...
Difference Between C++ and Java
Difference Between C++ and Java
C++
Java
1. C++ is an extension of C with Object oriented behavior , C++ is not complete object oriented language as Java.
1. Java is complete object oriented language.
2. C++ supports pointer concept.
2. Java does not support pointer.
3. At compilation stage C++ source code converted into machine level code.
3. At compilation stage Java source code converted...
Difference Betwee C and C++
Difference Between C and C++
C
C++
1. C is Procedural Language. 1. C++ is non Procedural i.e Object oriented Language.
2. In C, Polymorphism is not possible. 2. The concept of polymorphism is used in C++.Polymorphism is the most Important Feature of OOPS.
3. Inheritance is not possible in C. 3. Inheritance is possible in C++.
4. Virtual Functions are not present in C. 4. The concept...