Selasa, 05 Mei 2015
FIFTH MEETING : ABSTRACT CLASS
NAME
RAHMATUL MAHDALINA
STUDENT NUMBER
L200134004
CLASS
X
A. Objective
Students are understand about abstract class in java
B.
Basic Teory
Java supplied a mechanism
that is enable a method in class must not by definition. This method called
abstract method and the class called abstract class.
Definition of class a given by derivative
class. In every derivative class from abstract class must definite methods that
are rated abstract method.
Abstract class created firstly knowing
that subclasses are operation appropriate with the method but, between subclass
with other subclass have differences action.
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 class by name “Kendaraan.java” like in the picture
package
Abstract_cls;
/**
*
* @author
Octopus_girl
*/
public abstract class Kendaraan {
protected
String nama;
public
abstract void jalankan();
}
2.
Save like the class name and compile
3.
Create new class by name “Sepeda.java”, write the program code like this
:
package
Abstract_cls;
/**
*
* @author
Octopus_girl
*/
public class Sepeda extends Kendaraan {
public
Sepeda (String nama){
this.nama = nama;
}
public void
jalankan(){
System.out.println("Duduklah diatas Sadel
"+""+this.nama+" dan kayuhlah");
}
4.
Save file like the name of class and compile
5. Then, create new class with main method ()
that is implementation of Sepeda class. Write the program code like this :
package Abstract_cls;
/**
*
* @author Octopus_girl
*/
public class TesAbstractSepeda {
public static void main
(String[]args){
Sepeda sepedaku = new
Sepeda ("Sepeda Ontel");
sepedaku.jalankan();
}
}
6.
Save like class name and compile
7.
Observing and record the result
EXERCISE
|
1.
Create new class with name “Mobil.java” that is subclass from kendaraan
and create class “TesAbstrakMobil.java” as implementation of class “Mobil.java”
package Abstract_cls;
/**
*
* @author
Octopus_girl
*/
public class Mobil extends Kendaraan {
public
Mobil (String nama){
this.nama = nama;
}
public void
jalankan(){
System.out.println("Duduklah
didepan Setir "+""+this.nama+" dan Hidupkan mesin");
}
public void
bunyikanTlakson(){
System.out.println("Bunyikan Tlakson
"+""+this.nama+" Saat di persimpangan");
}
}
package Abstract_cls;
/**
*
* @author
Octopus_girl
*/
public class TesAbstractMobil {
public
static void main (String[]args){
Mobil
mobiltua = new Mobil ("Mobil Tua");
mobiltua.jalankan();
mobiltua.bunyikanTlakson();
}
}
2.
Follow the steps
3.
Add one new method in class “Mobil.java”
public void bunyikanTlakson(){
}
4.
Result from the program
E.
Analysis
Abstract method
in the Kendaraan class can be access in the other class and other class must
not definite the method cause can be generated from class Kendaraan.
