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Example to create Interface in java

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The Tutorial wants to describe you a code that helps you in creating a Interface in java.

Example to create Interface in java

     

The Tutorial wants to describe you a code that helps you in creating a Interface in java. Interface is defined as group of method, that implement a empty body. An example of Radio Tuner, when a listener switch on Radio Tuner, the tuner act  as interface between the electrical wing circuit inside the radio and you. Usually the Java do not support multiple inheritance, Interface in java is used for multiple inheritance.

Understand with Example

The given below code illustrates that interface in java support  multiple inheritance In order to implement interface we implement a keyword implement. The Tutorial  describes how to create and use interface method in your class. The step involved in the program are described below-

1)We have taken an interface check ,that implement a empty method message ( ).

2)Inside the class we create an object of interface check and implement a body  to the method message.

3)The object t call and expose a message ( ) method to the outside world.

4)In case there is an exception in the try block, the subsequent catch block handle the exception.

Interface.java

interface check {
public void message();
}
public class Interface {
public static void main(String[] args) {
  try {
  check t = new check() {
  public void message() {
  System.out.println("Method defined in the interface");
  }
  };
  t.message();
  catch (Exception ex) {
  System.out.println("" + ex.getMessage());
  }
  }
  }

Output of the program

Method defined in the interface

Download source code

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Posted on: June 12, 2009

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Comments
Nilanjana
September 13, 2011
query

In this prog where r we implmenting the interface?
Pulkit
September 20, 2011
none

this site is awesome, very useful to me
Anant Mahale
February 20, 2012
simple Interface fot Calculate Area of Rectangle

import java.io.*; interface rectangle { public int cal(int a, int b); } class area implements rectangle { public int cal(int a, int b) { return(a*b); } } class simple_interface { public static void main(String args[]) { try { int x,y; DataInputStream cin=new DataInputStream(System.in); System.out.println("Enter length and breath"); x=Integer.parseInt(cin.readLine()); y=Integer.parseInt(cin.readLine()); area a=new area(); System.out.println("The area of rectangle"+a.cal(x,y)); } catch(Exception e) { } } }
prashant
November 30, 2011
interface

For practice
abhishek
January 23, 2012
Interface: error in above program

Interface can not be instantiate.
babita
February 14, 2012
interface

how to create java based interface for healthcare and how to connect it to oracle10g
john
February 17, 2012
about interface

what are the uses of interface
joseph
March 5, 2012
How can i create a web page using java language

please help me out
Steve
March 21, 2012
Not a very good example

Embedding the definition of "check.message()" within the creation of the object was a poor way to illustrate how to create an interface. This is a sloppy way of programming that results in ugly, unreadable code and is a practice that should be discouraged (at least for professional applications).
jaslin
May 8, 2012
java coding

i have a problem in doing a java code for interface that have button which are need to link with others class.can i have the example?
naren
June 18, 2012
java-interface

Hi i have confusion in above example is that in java we cant make object or instance of an interface but you created object of interface check ,i think that is not possible.
Mittul Madaan
June 30, 2012
keyword missing

Hello sir, my question is that why have you not mentioned keyword "implements check" after "public class Interface"? Please reply at mittulmadaan@gmail.com
savari
July 11, 2012
hai

interface check { public void message(); } public class Interface { public static void main(String[] args) { try { check t = new check() { public void message() { System.out.println("Method defined in the interface"); } }; t.message(); } catch (Exception ex) { System.out.println("" + ex.getMessage()); } } } Output of the program Method defined in the interface Download source code Related Tags for Example to create Interface in java: c, interface, method, int, group, define, empty, e, im, ce, in, body, as, m, nt, ace, em, me, pty, defined, s, at, is, ha, mpl, s, s, th, hat, face, fin, ple, pl, o «Previous Index
susila josephine B
August 8, 2012
java all program

use full
Dhanz.p
August 17, 2012
package

i won't say about package, i need clear definitions of package..wish u all success.....
pardeep kaur
October 29, 2012
how we use bufferReader in java

ur all programs are excellent and help me alot....
shaaban
December 30, 2012
creating the interractive interface

dear experts I am a beginner and upcoming programmer, thus I want to know well how to create good interfaces
Irfan
November 24, 2012
No interface Implementation

Where is the keywork implements in the class implementing the interface?
DMCA.com