Constructor

Ads

 
 
 

Share on Google+Share on Google+

vijay
Constructor
1 Answer(s)      8 years ago
Posted in : Java Beginners
Ads
View Answers

November 7, 2008 at 12:13 PM


Hi friend,


A constructor, in object oriented programming concept is a method which has the same name of the class where it is defined. It will be called when an object is created for that class. The job of the constructor is the initialization of the members of the class.



class Constract{
int x,y;
Constract(int a, int b){
x = a;
y = b;
}
Constract(){
}
int area(){
int ar = x*y;
return(ar);
}
}
public class ConstractorExam{
public static void main(String[] args){
Constract b = new Constract();
b.x = 4;
b.y = 5;
System.out.println("Area of rectangle : " + b.area());
System.out.println("Value of y in Constract class : " + b.y);
Constract a = new Constract(2,1);
a.x = 5;
a.y = 2;
System.out.println();
System.out.println("Area of rectangle : " + a.area());
System.out.println("Value of x in Constract class : " + a.x);
}
}

---------------------------------------------------


Visit for more information.

http://www.roseindia.net/java/beginners/Construct.shtml

Thanks.


Ads









Related Tutorials/Questions & Answers:
constructor
: a call to a constructor method. Constructor methods are special methods... of that type. The new operator creates the object, the constructor initializes
Constructor
Constructor  what is the advantage of a constructor ? not the purpose of the constuctor? give me some in-depth analysis?   Please visit the following links: http://www.roseindia.net/java/java-tips/oop/constructors
Advertisements
call a constructor
call a constructor  How do you call a constructor for a parent class
Java constructor
Java constructor  When does the compiler supply a default constructor for a class
constructor in servlet
constructor in servlet  Can we use the constructor, instead of init... the constructor instead of init(). There's nothing to stop you. But you shouldn't... your no-arg constructor. So you won't have access to a ServletConfig
Constructor in Servlet.
Constructor in Servlet.  how to write a constructor in Java Servlet?   Servlet is like a POJO .You can create constructor in servlet. You can also use constructor for initialising purpose but it is not a useful approach
constructor inheritance
constructor inheritance  can we inherit constructor ?if not then why yhis example is given class A { public A() { System.out.println("In A ctor"); } } class B extends
constructor or object
constructor or object  object or construct which create first?   A constructor is always created first. Here is an example: class Example { Example(String st){ System.out.println(st); } public
constructor program
constructor program  write a program to calculate the gross salary and net salary of an employee based on the following attributes: empno,empname,emp address,basic,hra,da,ta,vehicle loan,personel loan use the scanner class
constructor in java
constructor in java  Ex: public class A { public A(){ System.out.println("A"); } public A(int i){ this(); System.out.println(i); } } public class B extends A{ public B (){ System.out.println("B"); } public B (int i
using constructor
using constructor  all constructor for matrix class?   The given code implements the Matrix class and show the addition of two matrices. public class Matrix{ int M; int N
constructor overriding - Java Beginners
constructor overriding  Write a program to demonstrate the overriding of constructor methods
Java private constructor
Java private constructor  what is private constructor?what are the uses of writing private constructor in our program
constructor - Java Interview Questions
constructor  We cann't override a constructor, i.e., it is almost like a final method, then why cann't we write the constructor as final?  Hi friend, Overriding constructor : * you cannot override
java serializable default constructor
java serializable default constructor  java serializable default constructor
Constructor - Java Interview Questions
Java constructor overloading example  I need Java constructor overloading exampleThanks!  Ans1 : You can not override a constructor as they are not inherited. you cannot override a constructor in the same class
Overloading constructor in flex
Overloading constructor in flex  Hi...... What is overloading a constructor? How do you overload constructors in flex? please tell me about it........... Thanks   Hi..... Action script does not support overloading
java default constructor
be the default constructor: 1) public Student(){ private int rollNo = 0; private... the space in memory and initializes the fields. So, in the default constructor you can initializ your fields with a value or you can simply create a constructor
constructor - Java Beginners
constructor  what is constructor? give some simple example what..., A java constructor has the same name as the name of the class to which it belongs. Constructor's syntax does not include a return type, since constructors
Constructor - Java Beginners
Constructor  why can use constructor in java .without constructor Can we run program in java..?  to create an object constructor needed.   Hi friend, i am sending code class Constract{ int x,y
Constructor - Java Beginners
Constructor  What is a constructor? What are its special properties?  Hi friend, A constructor, in object oriented programming concept.... It will be called when an object is created for that class. The job of the constructor
Calling Constructor in Spring
Calling Constructor in Spring       In the given example you will be learning about a constructor and how to call a constructor in the Spring. Declaring constructor injection
Constructor - Java Beginners
Constructor  Do u have a constructor example program that has an input type in variables?   Hi friend, Code input type variables in Constructor : import java.io.*; class another{ another() throws Exception
Constructor in java
When you create a new instance (a new object) of a class using the new keyword, a constructor for that class is called. Constructors are used to initialize... links Constructor in Java
program for default constructor in java
program for default constructor in java   class Box { double l; double b; double h; Box
Java Constructor
Every Class has at least one constructor, which assign initial values to instance variables of the class. Name of the constructor is same as class name. A default constructor with no arguments will be called automatically by the Java
what's the purpose of constructor in abstract class?
what's the purpose of constructor in abstract class?  what's the purpose of constructor in abstract class
Calling Constructor in Spring
Calling Constructor in Spring       In the given example you will be learning about a constructor and how to call a constructor in the Spring. Declaring constructor injection in the Spring
Calling Constructor in Spring
Calling Constructor in Spring       In the given example you will be learning about a constructor and how to call a constructor in the Spring. Declaring constructor injection
What is the difference between a constructor and a method?
What is the difference between a constructor and a method?  Hi, What is the difference between a constructor and a method?   Hi, I have found a good link of Java program related to difference between constructor
Constructor Overloading in Java
Constructor Overloading in Java       Here, you will learn more about Constructor and how... about the Constructor that are overloaded in the given program with complete code
Tutorials   
Java Spring Hibernate Struts Training java.lang.NoClassDefFoundError: org/apache/http/client/HttpClient How do I resolve this Java Class not found exception? httpclient java.lang.NoClassDefFoundError Apache Commons ioutils maven dependency Read/Convert an inputStream to a String What is the meaning of Java Platform? Why Java is a platform independent language? What is the benefits of learning Core Java? Which technology should I learn after Java? What is array in java with example? How to Convert ArrayList to Array? How to substring in Java? How to format number in Java? What is instance variable in Java? How to download MySQL JDBC driver? What is Calendar class in Java? Which is the best Java tutorials for beginners? How to rename a file in Java? How to delete file in Java code? How to get day from date in Java using Calendar? How to get day of week in Java? How to calculate Date Difference in Java? How to compare date in Java? How to declare array in Java? How to calculate average of array in Java? What is Array in Java? write a java program to find the summation of all the integers entered on command line Sum of two numbers using command line arguments in Java How to create and use Array in Java? How to pass command line arguments in Java? How to create Applet Hello World? Appending String efficiently in Java How to append String in Java? How to list even numbers between 1 and 100? How to add BigDecimal in Java? What is Abstraction In Java? Which is best Beginners Java Tutorial? What is java.util package? Create list from array in Java Filter collection in Java 8 What is the best way to filter a Java Collection? Easy way to transform Collection to Array? How to convert Collection to Array in Java? What are Basic Java Language Elements? Advanced Java Tutorials in 2017 Java brief history Best Reasons to learn Java Java Example Codes and Tutorials in 2017 How do I read a large file quickly in Java? Is learning Java worthwhile?

Ads

 
Advertisement null

Ads