example abstrack class of java netbeans part 2

abstract class Shape {
public String color;
 //constractor default, constraktor yang tidak memiliki argumen dan isi
public Shape() {
}
 //sama halnya dengan kelas biasa abstract class juga bisa berisi method
 //seperti yang ada pada kelas biasa
public void setColor(String c)
{ color = c; }
public String getColor(){
 return color;
}
//sebuah abstract method yang tidak memiliki body
//method ini akan diinisialisasi nantinya pada subclass yang mewarisi kelass abstract Shape ini
//semua abstract method yang ada pada class abstract harus diimplementasikan
//semua oleh subclass
abstract public double area();
}
//keyword extends adalah keyword yang digunakan oleh subclass
//ketika melakukan pewarisan terhada super class
public class Point extends Shape {
static int x, y;
public Point(){
x = 0;
y = 0;
}
public double area() {
return 0;
}
public double perimeter() {
return 0;
}
public static void print() {
System.out.println("point: " + x + "," + y);
}
public static void main(String args[]) {
Point p = new Point();
p.print(); }
}

Output
point: 0, 0

example abstrack class of java netbeans

abstract class Shape {
public String color;
 //constractor default, constraktor yang tidak memiliki argumen dan isi
public Shape() {
}
 //sama halnya dengan kelas biasa abstract class juga bisa berisi method
 //seperti yang ada pada kelas biasa
public void setColor(String c)
{ color = c; }
public String getColor(){
 return color;
}
//sebuah abstract method yang tidak memiliki body
//method ini akan diinisialisasi nantinya pada subclass yang mewarisi kelass abstract Shape ini
//semua abstract method yang ada pada class abstract harus diimplementasikan
//semua oleh subclass
abstract public double area();
}
//keyword extends adalah keyword yang digunakan oleh subclass
//ketika melakukan pewarisan terhada super class
public class Point extends Shape {
static int x, y;
public Point(){
x = 0;
y = 0;
}
public double area() {
return 0;
}
public double perimeter() {
return 0;
}
public static void print() {
System.out.println("point: " + x + "," + y);
}
public static void main(String args[]) {
Point p = new Point();
p.print(); }
}

Output
point: 0, 0

exemple data abstrack coding java

abstrak public class Mobil {
 public void injakPedalGas();
 public void injakRem(){
    System.out.println(“Mobil berhenti!”);
 }
}
public class Kijang extends Mobil{
 public void injakPedalGas(){
  System.out.println("Mobil Melaju dengan kecepatan 80 Km/jam...");
 }
}
public class BMW extends Mobil {
   public void injakPedalGas(){
    System.out.println("Mobil Melaju dengan kecepatan 100 Km/jam...");
 }
}


>> class for running
public class TestMobil {
 public static void main(String[] args){
  Mobil mobil = new Mobil(){
   public void injakPedalGas(){
    System.out.println("Mobil berjalan...");
   }
  };
 
  Kijang kijang = new Kijang();
  Escudo escudo = new Escudo();
  BMW bmw = new BMW();
 
  mobil.injakPedalGas();
 
  mobil = kijang;
  mobil.injakPedalGas();
 
  mobil = escudo;
  mobil.injakPedalGas();
 
  mobil = bmw;
  mobil.injakPedalGas();
 }
}

Deklarasi sebuah Method

Deklarasi sebuah Method
public, private, protected, package
static
abstract
final
native
synchronized
<return type> <nama_method>(parameter)
throws exception
Contoh :
public double luas(int panjang, int lebar);

Exemple AWT java Netbeans

 
import java.awt.Dimension;
import java.awt.Frame;
import java.awt.Insets;

/**
 * Example from Chapter 3
 *
 * Simple object to prompt for user id/password.
 *
 * @author Jeff Heaton
 * @version 1.0
 */
public class SecurePrompt extends javax.swing.JDialog {
  public SecurePrompt(Frame parent) {
    super(parent, true);

    //{{INIT_CONTROLS
    setTitle("Security");
    getContentPane().setLayout(null);
    setSize(403, 129);
    setVisible(false);
    JLabel1.setText("User ID:");
    getContentPane().add(JLabel1);
    JLabel1.setBounds(12, 12, 48, 24);
    JLabel2.setText("Password:");
    getContentPane().add(JLabel2);
    JLabel2.setBounds(12, 48, 72, 24);
    _uid.setText("jheaton");
    getContentPane().add(_uid);
    _uid.setBounds(72, 12, 324, 24);
    _ok.setText("OK");
    getContentPane().add(_ok);
    _ok.setBounds(60, 84, 84, 24);
    getContentPane().add(_pwd);
    _pwd.setBounds(72, 48, 324, 24);
    _cancel.setText("Cancel");
    getContentPane().add(_cancel);
    _cancel.setBounds(264, 84, 84, 24);
    //}}

    //{{REGISTER_LISTENERS
    SymAction lSymAction = new SymAction();
    _ok.addActionListener(lSymAction);
    _cancel.addActionListener(lSymAction);
    //}}
  }

  public void setVisible(boolean b) {
    if (b)
      setLocation(50, 50);
    super.setVisible(b);
  }

  public void addNotify() {
    // Record the size of the window prior to calling parents addNotify.
    Dimension size = getSize();

    super.addNotify();

    if (frameSizeAdjusted)
      return;
    frameSizeAdjusted = true;

    // Adjust size of frame according to the insets
    Insets insets = getInsets();
    setSize(insets.left + insets.right + size.width, insets.top
        + insets.bottom + size.height);
  }

  // Used by addNotify
  boolean frameSizeAdjusted = false;

  //{{DECLARE_CONTROLS
  javax.swing.JLabel JLabel1 = new javax.swing.JLabel();

  javax.swing.JLabel JLabel2 = new javax.swing.JLabel();

  /**
   * The user ID entered.
   */
  javax.swing.JTextField _uid = new javax.swing.JTextField();

  /**
   */
  javax.swing.JButton _ok = new javax.swing.JButton();

  /**
   * The password is entered.
   */
  javax.swing.JPasswordField _pwd = new javax.swing.JPasswordField();

  javax.swing.JButton _cancel = new javax.swing.JButton();

  //}}

  class SymAction implements java.awt.event.ActionListener {
    public void actionPerformed(java.awt.event.ActionEvent event) {
      Object object = event.getSource();
      if (object == _ok)
        Ok_actionPerformed(event);
      else if (object == _cancel)
        Cancel_actionPerformed(event);
    }
  }

  /**
   * Called when ok is clicked.
   *
   * @param event
   */
  void Ok_actionPerformed(java.awt.event.ActionEvent event) {
    setVisible(false);
  }

  /**
   * Called when cancel is clicked.
   *
   * @param event
   */
  void Cancel_actionPerformed(java.awt.event.ActionEvent event) {
    _uid.setText("");
    _pwd.setText("");
    setVisible(false);
  }
}

user id and password

 
import java.awt.Dimension;
import java.awt.Frame;
import java.awt.Insets;

/**
 * Simple object to prompt for user id/password.
 *
 */
public class SecurePrompt extends javax.swing.JDialog {
  public SecurePrompt(Frame parent) {
    super(parent, true);

    //{{INIT_CONTROLS
    setTitle("Security");
    getContentPane().setLayout(null);
    setSize(403, 129);
    setVisible(false);
    JLabel1.setText("User ID:");
    getContentPane().add(JLabel1);
    JLabel1.setBounds(12, 12, 48, 24);
    JLabel2.setText("Password:");
    getContentPane().add(JLabel2);
    JLabel2.setBounds(12, 48, 72, 24);
    _uid.setText("jheaton");
    getContentPane().add(_uid);
    _uid.setBounds(72, 12, 324, 24);
    _ok.setText("OK");
    getContentPane().add(_ok);
    _ok.setBounds(60, 84, 84, 24);
    getContentPane().add(_pwd);
    _pwd.setBounds(72, 48, 324, 24);
    _cancel.setText("Cancel");
    getContentPane().add(_cancel);
    _cancel.setBounds(264, 84, 84, 24);
    //}}

    //{{REGISTER_LISTENERS
    SymAction lSymAction = new SymAction();
    _ok.addActionListener(lSymAction);
    _cancel.addActionListener(lSymAction);
    //}}
  }

  public void setVisible(boolean b) {
    if (b)
      setLocation(50, 50);
    super.setVisible(b);
  }

  public void addNotify() {
    // Record the size of the window prior to calling parents addNotify.
    Dimension size = getSize();

    super.addNotify();

    if (frameSizeAdjusted)
      return;
    frameSizeAdjusted = true;

    // Adjust size of frame according to the insets
    Insets insets = getInsets();
    setSize(insets.left + insets.right + size.width, insets.top
        + insets.bottom + size.height);
  }

  // Used by addNotify
  boolean frameSizeAdjusted = false;

  //{{DECLARE_CONTROLS
  javax.swing.JLabel JLabel1 = new javax.swing.JLabel();

  javax.swing.JLabel JLabel2 = new javax.swing.JLabel();

  /**
   * The user ID entered.
   */
  javax.swing.JTextField _uid = new javax.swing.JTextField();

  /**
   */
  javax.swing.JButton _ok = new javax.swing.JButton();

  /**
   * The password is entered.
   */
  javax.swing.JPasswordField _pwd = new javax.swing.JPasswordField();

  javax.swing.JButton _cancel = new javax.swing.JButton();

  //}}

  class SymAction implements java.awt.event.ActionListener {
    public void actionPerformed(java.awt.event.ActionEvent event) {
      Object object = event.getSource();
      if (object == _ok)
        Ok_actionPerformed(event);
      else if (object == _cancel)
        Cancel_actionPerformed(event);
    }
  }

  /**
   * Called when ok is clicked.
   *
   * @param event
   */
  void Ok_actionPerformed(java.awt.event.ActionEvent event) {
    setVisible(false);
  }

  /**
   * Called when cancel is clicked.
   *
   * @param event
   */
  void Cancel_actionPerformed(java.awt.event.ActionEvent event) {
    _uid.setText("");
    _pwd.setText("");
    setVisible(false);
  }
}

error massage

import javax.swing.JFrame;
import javax.swing.JOptionPane;

public class ErrorDialog {

  public static void main(String argv[]) {
    String message = "\"The Comedy of Errors\"\n"
        + "is considered by many scholars to be\n"
        + "the first play Shakespeare wrote";
    JOptionPane.showMessageDialog(new JFrame(), message, "Dialog",
        JOptionPane.ERROR_MESSAGE);
  }
}

creating and using dialog

 
// : c14:Dialogs.java
// Creating and using Dialog Boxes.
// <applet code=Dialogs width=125 height=75></applet>
// From 'Thinking in Java, 3rd ed.' (c) Bruce Eckel 2002
// www.BruceEckel.com. See copyright notice in CopyRight.txt.

import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JApplet;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JLabel;

class MyDialog extends JDialog {
  public MyDialog(JFrame parent) {
    super(parent, "My dialog", true);
    Container cp = getContentPane();
    cp.setLayout(new FlowLayout());
    cp.add(new JLabel("Here is my dialog"));
    JButton ok = new JButton("OK");
    ok.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        dispose(); // Closes the dialog
      }
    });
    cp.add(ok);
    setSize(150, 125);
  }
}

public class Dialogs extends JApplet {
  private JButton b1 = new JButton("Dialog Box");

  private MyDialog dlg = new MyDialog(null);

  public void init() {
    b1.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        dlg.show();
      }
    });
    getContentPane().add(b1);
  }

  public static void main(String[] args) {
    run(new Dialogs(), 125, 75);
  }

  public static void run(JApplet applet, int width, int height) {
    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.getContentPane().add(applet);
    frame.setSize(width, height);
    applet.init();
    applet.start();
    frame.setVisible(true);
  }
} ///:~

confirmation dialog

import javax.swing.JFrame;
import javax.swing.JOptionPane;

public class OptionDialog {

  public static void main(String argv[]) {
    if (JOptionPane.showConfirmDialog(new JFrame(),
        "Do you want to quit this application ?", "Title",
        JOptionPane.YES_NO_OPTION) == JOptionPane.YES_OPTION)
      System.exit(0);

  }
}

Contoh Polimorfisme

Abang-abang, mbak bro, mas bro,.....

disini ane akan mencontohkan pemrograman yang berkaitan dengan "POLIMORFISME" ,.......
tetetetetetettetetetetetet
hahahahahaha

langsung saja agan tinggal download source code nya di bawah sini,.......

http://www.4shared.com/file/XLrGkSqn/bos.html

http://www.4shared.com/file/AvnEfla8/direktur.html

http://www.4shared.com/file/ezl-Mky0/karyawan.html

http://www.4shared.com/file/lHNCNXVK/manager.html

http://www.4shared.com/file/x_VlTJlg/supervisor.html

http://www.4shared.com/file/K9g0EPvI/Main.html

http://www.4shared.com/photo/QFD2gpw8/output.html

Iterasi Bilangan Pangkat

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package bilanganpangkat;

import java.util.Scanner;

/**
 *
 * @author surur syifaus
 */
public class pangkat_iterasi {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        Scanner x=new Scanner(System.in);

        int a,b;
        System.out.println("angka dasar");
        a=x.nextInt();
        System.out.println("angka pangkat");
        b=x.nextInt();
        double c=( (Math.pow(a, b)));
        if(b==0){
            System.out.println("hasil = 1");
        }
        else{
            System.out.println(""+c);
        }

    }

}

Iterasi Bilangan Fibonanci

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package new1;

import javax.swing.JOptionPane;
/**
 *
 * @author surur syifaus
 */
public class fibonanci_iterasi {


    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
    int deret=Integer.parseInt(JOptionPane.showInputDialog("Masukkan berapa deret Fibonacci: "));
        int a=0;
        int b=1;
        System.out.print(deret+" deret Fibonacci: " );
        for (int i=0;i<deret;i++){
            System.out.print(a+" ");
            a=a+b;
            b=a-b;
        }
    }
}

JOptionsPane java Netbeans

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package daftar;
import javax.swing.*;
/**
 *
 * @author surur
 */
public class prak1 {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        String input;

        int nim, ttl;
        String nama, fakjur, alamat, cita2;

        input=JOptionPane.showInputDialog("NAMA : ");
        nama=(input);
        input=JOptionPane.showInputDialog("NIM : ");
        nim=Integer.parseInt(input);
        input=JOptionPane.showInputDialog("Fakultas/Jurusan : ");
        fakjur=(input);
        input=JOptionPane.showInputDialog("TTL : ");
        ttl=Integer.parseInt(input);
        input=JOptionPane.showInputDialog("Alamat : ");
        alamat=(input);
        input=JOptionPane.showInputDialog("Cita-cita : ");
        cita2=(input);
        JOptionPane.showMessageDialog(null,("Nama : "+nama)+("\nNIM : "+nim)+("\nFakultas/Jurusan : "+fakjur)
                +("\nTTL : "+ttl)+("\nAlamat : "+alamat)+("\nCita-cita : "+cita2));
        System.exit(0);
    }

}

Persegi kotak Angka

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package coba;

import java.util.Scanner;

/**
 *
 * @author surur
 */
public class yess {
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        Scanner x=new Scanner(System.in);
        int y=x.nextInt();
        for (int i = 0; i < y; i++) {
            System.out.println();
            for (int j = 0; j < y; j++) {
                System.out.print(i);

            }
        }
        }
}

Segitiga Angka Biasa (gag kuwalek)

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package coba;

import java.util.Scanner;

/**
 *
 * @author surur
 */
public class yess {
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        Scanner x=new Scanner(System.in);
        int y=x.nextInt();
        for (int i = 0; i < y; i++) {
            System.out.println();
            for (int j = 0; j < i; j++) {
                System.out.print(i);

            }
        }
        }
}

Segitiga Angka Terbalik

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package coba;

import java.util.Scanner;

/**
 *
 * @author surur
 */
public class yess {
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        Scanner x=new Scanner(System.in);
        int y=x.nextInt();
        for (int i = 0; i < y; i++) {
            System.out.println();
            for (int j = i; j < y; j++) {
                System.out.print(i);

            }
        }
        }
}

contoh program sederhana (Array)

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package praktikum1;

import javax.swing.JOptionPane;

/**
 *
 * @author surur
 */
public class tugas {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
  System.out.println("=================================================");
 {System.out.println("NIM"+"    "+"Nama"+"    "+"MK"+"    "+"N.UTS"+"    "+"N.UAS"+"    "+"N.TUGAS");}
  System.out.println("=================================================");
       String[][]A=new String[1][3];
       String[][]B=new String[3][1];
                       String[][]C=new String[1][1];
                       String[][]D=new String[1][1];
String[][]E=new String[1][1];
String[][]F=new String[1][1];
        for (int i = 0; i < A.length; i++) {
            for (int j = 0; j < B.length; j++) {
          A[i][j]=JOptionPane.showInputDialog(null,"NIM : ");
           for (int q = 0; q < C.length; q++) {
           for (int w = 0; w < D.length; w++) {
          C[q][w]=JOptionPane.showInputDialog(null,"Nama :");
           for (int a = 0; a < C.length; a++) {
           for (int s = 0; s < F.length; s++) {
          E[a][s]=JOptionPane.showInputDialog(null,"MK : ");
           for (int k = 0; k < E.length; k++) {
           for (int l = 0; l < F.length; l++) {
          E[k][l]=JOptionPane.showInputDialog(null,"N.UTS : ");
           for (int m = 0; m < E.length; m++) {
           for (int n = 0; n < F.length; n++) {
          E[m][n]=JOptionPane.showInputDialog(null,"N.UAS : ");
           for (int o = 0; o < E.length; o++) {
           for (int p = 0; p < F.length; p++) {
          E[o][p]=JOptionPane.showInputDialog(null,"N.TUGAS : ");


       


System.out.println( A[i][j]+"    "+C[q][w]+"    "+E[a][s]+"    "+E[k][l]+"    "+E[m][n]+"    "+E[o][p]);
                   }}
                   } }     } }     }
                }
                }
                }
            }
        }
}




    }

contoh "IF"

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package tugas;
/**
 *
 * @author surur
 */
public class logicalIF {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        int nilai=33;
        if(nilai>=76)
            System.out.println("A");
        else if (nilai >= 66)
                System.out.println("B");
        else if (nilai>=56)
            System.out.println("C");
        else if (nilai>=46)
            System.out.println("D");
        else
            System.out.println("E");


    }

}

contoh "switch-case"

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package praktikum1;

/**
 *
 * @author surur
 */
public class test1 {
         /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
       /**dani mau mengambil mata kuliah
        * yang dipilih adalah kalkulus
        */

       int makul=2;

        switch(makul){
            case 1:
                System.out.println("algo");break;
            case 2:
                System.out.println("kalkulus");break;
            case 3:
                System.out.println("teknik digital");break;
        }



    }

}

contoh "do-while"

/*
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 * and open the template in the editor.
 */

package tugas;

/**
 *
 * @author surur
 */
public class dowhile {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        int a=1;
        do{
            System.out.println(a+"\tSyifaus Surur");
            a++;
        }while(a<=1000);
        }
    }