Selasa, 12 Mei 2015
SIXTH MEETING : INTERFACE
|
|
NAME
|
RAHMATUL MAHDALINA
|
STUDENT NUMBER
|
L200134004
|
CLASS
|
X
|
A. Objective
Students are understand about interface in java
B.
Basic Teory
Interface is a mechanism
available in java and enable for share constantan or determine a method that
used some class. A glance interface is like with abstract class, so abstract
class determined method for subclass too.
C.
Tools and Materials
· Laptop
· Practice Object Oriented Programming
Modul
· Software NetBeans IDE 8.0.2
· Java Development Kit (JDK) 1.8.0_31
D.
Work Step
EXPERIMENT
|
Steps
of experiment:
1.
Create new interface by name “IntLampu.java”
like in the picture
package
Interface;
/**
*
* @author
Octopus_girl
*/
public interface IntLampu {
public static
final int KEADAAN_HIDUP = 1;
public
static final int KEADAAN_MATI = 0;
public
abstract void hidupkan();
public
abstract void matikan();
}
2.
Compile the program
3.
Create new class by name “Lampu.java” that
is implementation from interface “IntLampu.java”
4.
Write the program code like this :
package
Interface;
/**
*
* @author
Octopus_girl
*/
public class Lampu implements IntLampu {
private int
statusLampu = 0;
public void
hidupkan(){
if(this.statusLampu
!= KEADAAN_MATI){
this.statusLampu = KEADAAN_HIDUP;
System.out.println("Lampu Hidup");
}
else{
System.out.println("Lampu Sudah Hidup");
}
}
public
void matikan(){
if(this.statusLampu != KEADAAN_HIDUP){
this.statusLampu = KEADAAN_MATI;
System.out.println("Lampu mati");
}
else{
System.out.println("Lampu Sudah mati");
}
}
}
5.
Compile, analyst described the class
6. Create new class with main method () that is
implementation of “Lampu.java” class. Write the program code like this :
package Interface;
/**
*
* @author Octopus_girl
*/
public class TesInterface {
public static void main
(String []args){
Lampu lampuKamar = new
Lampu();
lampuKamar.hidupkan();
lampuKamar.hidupkan();
lampuKamar.matikan();
lampuKamar.matikan();
}
}
7.
Compile and run the program
EXERCISE
|
1.
Modification interface “IntLampu.java” by
changed the final variable became
public
static final int KEADAAN_HIDUP = 2;
public
static final int KEADAAN_REDUP = 1;
public
static final int KEADAAN_MATI = 0;
add method redupkan ( )
public
abstract void redupkan()
2.
Modification class “TestInterface.java” in
order that run and the output like in picture
package Interface;
/**
*
* @author
Octopus_girl
*/
public class TesInterface {
public
static void main (String []args){
Lampu
lampuKamar = new Lampu();
lampuKamar.hidupkan();
lampuKamar.hidupkan();
lampuKamar.matikan();
lampuKamar.matikan();
lampuKamar.hidupkan();
lampuKamar.redupkan();
lampuKamar.redupkan();
}
}
3.
Create the analysis of the result
E.
Analysis
Interface is looks like abstract class and can access by other class
and for calling method. In the experiment and exercise it's tell about the
changed condition and we can make it by interface.
