Program Penghitung Volume Bangun Ruang (JAVA)

Nah ... Berhubung kemaren ada tugas mata kuliah PBO menggunakan JAVA SE , yah share aja ke teman teman sekalian , ya mungkin bermanfaat juga bagi kalian yang lagi menempuh mata kuliah PBO ,atau mungkin yang masih bingung dengan konsep OOP sendiri  . Di sini saya akan share program yang sangat sederhana Penghitung Volume Bangun Ruang .




Screen Shoot :

Jika ingin download source code (Neatbeans Project) + Tutorial sederhana klik disini . 

password : gandshare.blogspot.com

Daftar Keyboard Shortcuts

Inilah daftar Keyboard Shortcuts pada windows :









Keyboard Shorcuts (Microsoft Windows)
1. CTRL+C (Copy)
2. CTRL+X (Cut)
3. CTRL+V (Paste)
4. CTRL+Z (Undo)
5. DELETE (Delete)
6. SHIFT+DELETE (Delete the selected item permanently without placing the item in the Recycle Bin)
7. CTRL while dragging an item (Copy the selected item)
8. CTRL+SHIFT while dragging an item (Create a shortcut to the selected item)
9. F2 key (Rename the selected item)
10. CTRL+RIGHT ARROW (Move the insertion point to the beginning of the next word)
11. CTRL+LEFT ARROW (Move the insertion point to the beginning of the previous word)
12. CTRL+DOWN ARROW (Move the insertion point to the beginning of the next paragraph)
13. CTRL+UP ARROW (Move the insertion point to the beginning of the previous paragraph)
14. CTRL+SHIFT with any of the arrow keys (Highlight a block of text)
SHIFT with any of the arrow keys (Select more than one item in a window or on the desktop, or select text in a document)
15. CTRL+A (Select all)
16. F3 key (Search for a file or a folder)
17. ALT+ENTER (View the properties for the selected item)
18. ALT+F4 (Close the active item, or quit the active program)
19. ALT+ENTER (Display the properties of the selected object)
20. ALT+SPACEBAR (Open the shortcut menu for the active window)
21. CTRL+F4 (Close the active document in programs that enable you to have multiple documents opensimultaneou sly)
22. ALT+TAB (Switch between the open items)
23. ALT+ESC (Cycle through items in the order that they had been opened)
24. F6 key (Cycle through the screen elements in a window or on the desktop)
25. F4 key (Display the Address bar list in My Computer or Windows Explorer)
26. SHIFT+F10 (Display the shortcut menu for the selected item)
27. ALT+SPACEBAR (Display the System menu for the active window)
28. CTRL+ESC (Display the Start menu)
29. ALT+Underlined letter in a menu name (Display the corresponding menu) Underlined letter in a command name on an open menu (Perform the corresponding command)
30. F10 key (Activate the menu bar in the active program)
31. RIGHT ARROW (Open the next menu to the right, or open a submenu)
32. LEFT ARROW (Open the next menu to the left, or close a submenu)
33. F5 key (Update the active window)
34. BACKSPACE (View the folder onelevel up in My Computer or Windows Explorer)
35. ESC (Cancel the current task)
36. SHIFT when you insert a CD-ROMinto the CD-ROM drive (Prevent the CD-ROM from automatically playing)

Dialog Box - Keyboard Shortcuts
1. CTRL+TAB (Move forward through the tabs)
2. CTRL+SHIFT+TAB (Move backward through the tabs)
3. TAB (Move forward through the options)
4. SHIFT+TAB (Move backward through the options)
5. ALT+Underlined letter (Perform the corresponding command or select the corresponding option)
6. ENTER (Perform the command for the active option or button)
7. SPACEBAR (Select or clear the check box if the active option is a check box)
8. Arrow keys (Select a button if the active option is a group of option buttons)
9. F1 key (Display Help)
10. F4 key (Display the items in the active list)
11. BACKSPACE (Open a folder one level up if a folder is selected in the Save As or Open dialog box)

Microsoft Natural Keyboard Shortcuts
1. Windows Logo (Display or hide the Start menu)
2. Windows Logo+BREAK (Display the System Properties dialog box)
3. Windows Logo+D (Display the desktop)
4. Windows Logo+M (Minimize all of the windows)
5. Windows Logo+SHIFT+M (Restorethe minimized windows)
6. Windows Logo+E (Open My Computer)
7. Windows Logo+F (Search for a file or a folder)
8. CTRL+Windows Logo+F (Search for computers)
9. Windows Logo+F1 (Display Windows Help)
10. Windows Logo+ L (Lock the keyboard)
11. Windows Logo+R (Open the Run dialog box)
12. Windows Logo+U (Open Utility Manager)
13. Accessibility Keyboard Shortcuts
14. Right SHIFT for eight seconds (Switch FilterKeys either on or off)
15. Left ALT+left SHIFT+PRINT SCREEN (Switch High Contrast either on or off)
16. Left ALT+left SHIFT+NUM LOCK (Switch the MouseKeys either on or off)
17. SHIFT five times (Switch the StickyKeys either on or off)
18. NUM LOCK for five seconds (Switch the ToggleKeys either on or off)
19. Windows Logo +U (Open Utility Manager)
20. Windows Explorer Keyboard Shortcuts
21. END (Display the bottom of the active window)
22. HOME (Display the top of the active window)
23. NUM LOCK+Asterisk sign (*) (Display all of the subfolders that are under the selected folder)
24. NUM LOCK+Plus sign (+) (Display the contents of the selected folder)
25. NUM LOCK+Minus sign (-) (Collapse the selected folder)
26. LEFT ARROW (Collapse the current selection if it is expanded, or select the parent folder)
27. RIGHT ARROW (Display the current selection if it is collapsed, or select the first subfolder)

Shortcut Keys for Character Map
After you double-click a character on the grid of characters, you can move through the grid by using the keyboard shortcuts:
1. RIGHT ARROW (Move to the rightor to the beginning of the next line)
2. LEFT ARROW (Move to the left orto the end of the previous line)
3. UP ARROW (Move up one row)
4. DOWN ARROW (Move down one row)
5. PAGE UP (Move up one screen at a time)
6. PAGE DOWN (Move down one screen at a time)
7. HOME (Move to the beginning of the line)
8. END (Move to the end of the line)
9. CTRL+HOME (Move to the first character)
10. CTRL+END (Move to the last character)
11. SPACEBAR (Switch between Enlarged and Normal mode when a character is selected)

Microsoft Management Console (MMC)
Main Window Keyboard Shortcuts
1. CTRL+O (Open a saved console)
2. CTRL+N (Open a new console)
3. CTRL+S (Save the open console)
4. CTRL+M (Add or remove a console item)
5. CTRL+W (Open a new window)
6. F5 key (Update the content of all console windows)
7. ALT+SPACEBAR (Display the MMC window menu)
8. ALT+F4 (Close the console)
9. ALT+A (Display the Action menu)
10. ALT+V (Display the View menu)
11. ALT+F (Display the File menu)
12. ALT+O (Display the Favorites menu)

MMC Console Window Keyboard Shortcuts
1. CTRL+P (Print the current page or active pane)
2. ALT+Minus sign (-) (Display the window menu for the active console window)
3. SHIFT+F10 (Display the Action shortcut menu for the selected item)
4. F1 key (Open the Help topic, if any, for the selected item)
5. F5 key (Update the content of all console windows)
6. CTRL+F10 (Maximize the active console window)
7. CTRL+F5 (Restore the active console window)
8. ALT+ENTER (Display the Properties dialog box, if any, for theselected item)
9. F2 key (Rename the selected item)
10. CTRL+F4 (Close the active console window. When a console has only one console window, this shortcut closes the console)

Remote Desktop Connection Navigation
1. CTRL+ALT+END (Open the Microsoft Windows NT Security dialog box)
2. ALT+PAGE UP (Switch between programs from left to right)
3. ALT+PAGE DOWN (Switch between programs from right to left)
4. ALT+INSERT (Cycle through the programs in most recently used order)
5. ALT+HOME (Display the Start menu)
6. CTRL+ALT+BREAK (Switch the client computer between a window and a full screen)
7. ALT+DELETE (Display the Windows menu)
8. CTRL+ALT+Minus sign (-) (Place a snapshot of the active window in the client on the Terminal server clipboard and provide the same functionality as pressing PRINT SCREEN on a local computer.)
9. CTRL+ALT+Plus sign (+) (Place asnapshot of the entire client window area on the Terminal server clipboardand provide the same functionality aspressing ALT+PRINT SCREEN on a local computer.)

Microsoft Internet Explorer Keyboard Shortcuts
1. CTRL+B (Open the Organize Favorites dialog box)
2. CTRL+E (Open the Search bar)
3. CTRL+F (Start the Find utility)
4. CTRL+H (Open the History bar)
5. CTRL+I (Open the Favorites bar)
6. CTRL+L (Open the Open dialog box)
7. CTRL+N (Start another instance of the browser with the same Web address)
8. CTRL+O (Open the Open dialog box,the same as CTRL+L)
9. CTRL+P (Open the Print dialog box)
10. CTRL+R (Update the current Web )

Interface dan Method boolean dalam JAVA

Berhubung ane kemarin ada tugas membuat contoh program pengguanaan interface sederhana .
Nih sekarang saya share. Semoga membantu .

Interface adalah sebuah fitur OOP yang menampung method-method kosong. Interface harus diturunkan pada sebuah Class jika ingin di implementasikan. Tidak jauh berbeda dengan Abstract Class kegunaan dari interface, hanya saja interface tidak bisa menampung method default dan tidak mempunyai modifier.

Method Boolean adalah sebuah method yang indentifier nya berupa "boolean" (misal : public boolean  a()) , Dan memiliki return value di dalamnya .Lebih lengkapnya silahkan pahami contoh program sederhana berikut ini :

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package com.andiksetyawan.user;
//Copyright : Andik Setyawan 11201169
/**
 *
 * @author Andik S
 */
public interface  Login {
    public boolean validasi(String n , String p);
    public boolean cekData(String n ,String p);
}

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package com.andiksetyawan.user;
//Copyright : Andik Setyawan 11201169
/**
 *
 * @author Andik S
 */
public class DataLogin implements Login {
    private String nama1 = "andik";
    private String pass1 = "asia";
    @Override
    public boolean validasi(String n, String p) {
        if(n.equals("") && p.equals("")){
        return true;
        //Copyright : Andik Setyawan 1101169
        }else
            return false;
    }

    @Override
    public boolean cekData(String n, String p) {
        if (n.equals(nama1) && p.equals(pass1)){
        return true;
        }else{
        return false;
        }
    }
//Copyright : Andik Setyawan 1101169    
}

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package com.andiksetyawan.user;

import com.andiksetyawan.kendaraan.TestKendaraan;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author Andik S
 */
public class TestLogin {
    public static String nama = null , pass = null ;
    
    public static void login (){
     //Copyright : Andik Setyawan 1101169
    //String nama = null , pass = null ;
         BufferedReader bfr = new BufferedReader(new InputStreamReader(System.in));
         System.out.println("------------------");
         System.out.println("L O G I N  U S E R");        
         try {
            System.out.println("Masukkan nama : ");
            nama = bfr.readLine();
            System.out.println("Masukkan password :");
            pass = bfr.readLine();
        } catch (IOException ex) {
            System.out.println("Erorr" + ex.getMessage());
            login();
            //Copyright : Andik Setyawan 11201169
            //Logger.getLogger(TestLogin.class.getName()).log(Level.SEVERE, null, ex);
        } 
        DataLogin dl = new DataLogin();
        
        if (dl.validasi(nama, pass)){
            System.out.println("inputan tidak boleh kosong");
            login();
        }else{
        if (dl.cekData(nama,pass)){
            LoginSukses();
            //System.out.println("login sukses");
        }else{
            System.out.println("Login tidak sukses !");
            System.out.println("Silahkan coba lagi !");
            //Copyright : Andik Setyawan 11201169
            login();
        }
        }
            
    }
    public static void LoginSukses(){
    BufferedReader bfr = new BufferedReader(new InputStreamReader(System.in));
            int pil = 0;
             System.out.println("--------------------");
            System.out.println("Selamat Datang "+nama);
            System.out.println("--------------------");
             System.out.println("M E N U Pilihan :");
              System.out.println("[1]. Tes Kendaraan");
              System.out.println("[2]. LOG OFF");
              System.out.println("------------------");
              System.out.println("Pilihan Anda (1-2) :");
        try {
              pil =Integer.parseInt(bfr.readLine());
              if (pil == 1){
               TestKendaraan testKendaraan = new TestKendaraan();
               testKendaraan.testKendaraan();
               LoginSukses();
              }else if (pil == 2){
               menu();
              }else{
                  System.out.println("Pilihan tidak ada . Silahkan coba lagi !");
               LoginSukses();
              }
        } catch (IOException ex) {
            System.out.println("EROR :"+ex.getMessage());
            //Copyright : Andik Setyawan 11201169
            //Logger.getLogger(TestLogin.class.getName()).log(Level.SEVERE, null, ex);
        }
    }
    public static void menu (){
        BufferedReader bfr = new BufferedReader(new InputStreamReader(System.in));
            String pil = null;
              System.out.println("--------------------");
              System.out.println("M E N U  U T A M A");
              System.out.println("--------------------");
              System.out.println("M E N U Pilihan :");
              System.out.println("A. LOGIN");
              System.out.println("B. EXIT");
              System.out.println("------------------");
              System.out.println("Pilihan Anda (Ketik Login / Exit) :");
        try {
              pil = bfr.readLine();
              if (pil.equalsIgnoreCase("login")){
              login();
              }else if (pil.equalsIgnoreCase("exit")){
              System.out.println("App End ! \n Thanks !");
              System.exit(1);
              }else{
              System.out.println("Pilihan tidak ada . Silahkan coba lagi !");
              menu();
              //Copyright : Andik Setyawan 1101169
              }
        } catch (IOException ex) {
            System.out.println("EROR :"+ex.getMessage());
            //Logger.getLogger(TestLogin.class.getName()).log(Level.SEVERE, null, ex);
        }
    }
    
    public static void main (String[] args){
      menu();  
      //Copyright : Andik Setyawan 11201169
    }
}

Lebih lengkapnya silahkan download source code nya di sini  (neatbeans project)!.
pass : gandshare.blogspot.com

Keyword static di JAVA Programming

        Keyword Static di java digunakan untuk mengakses member baik variable ataupun method ( prosedur atau fungsi ) pada class tertentu tanpa harus membuat suatu objek dari class itu.
         Apabila kata kunci static kita tempatkan pada pendeklarasian member (variabel dan method) dari suatu class , maka member class tersebut dapat di akses tanpa harus menciptakan objek class tersebut.

 Untuk lebih jelasnya perhatikan contoh di bawah ini :

class Manusia.

package main;

public class Manusia {
static String Nama ;
int usia;

public static void cetak_static(){
 //method static
 System.out.println("nama :"+Nama);
}
public void cetak_notstatic(){
 System.out.println("usia :"+usia);
}
}

class Tester (Main).

package main;

public class Tester {

 public static void main(String[] args) {
  Manusia m = new Manusia ();//objek m Manusia
  
  Manusia.Nama = "andri";
  /* diatas
   * langsung bisa memanggil variabel nama 
   * tanpa membuat objek class Manusia
   * karena variabel Nama itu sendiri Berbentuk static(lht class Manusia)
   * sedangkan variabel usia harus membuat objek Manusia
   * dahulu dibawah ini 
   */
  m.usia = 9; 
  m.cetak_notstatic();
  /*
   *method cetak_notstatic()diatas harus membuat objek dahulu
   *jika ingin memanggil method tersebut 
   *karena method cetak_notstatic() tidak di deklarasikan
   *sebagai static
   */
  /* sedangkan
   * method cetak di bawah ini
   * memanggilnya tidak perlu membuat Objek baru
   * langsung bisa memanggil cetak dari class Manusia
   * itu sendiri karena method cetak() adalah
   * berbentuk static
   */
  Manusia.cetak_static();
 }

}

Kelemahan dari penggunaan keyword static adalah kita tidak bisa menggunakan keyword "this" di variabel tersebut .
Jika teman teman ingin mendownload file nya Klik Disini .(mediafire)
password : gandshare.blogspot.com

Contoh Program Java konsep OOP/PBO Dasar .

             Sudah lama tidak share di blog ini teman teman (hehehe:) ) . Oke kali ini saya akan share sebuah konsep OOP / Pemrograman Berorientasi objek yakni dalam bahasa java .
Nah di bawah ini contoh coding / syntax bahasa program JAVA .
Langsung saja cekidot ............


class induk Senjata

public class Senjata {// kelas induk 
 
public void tembak(){
 System.out.println("Door Dorrr Dorrr");
 
} 
}

class M16 turunan dari class Senjata

public class M16 extends Senjata { 
/*extends = keyword inheritance , 
 * bahwa kelas M16 adalah kelas anak dari kelas induk Senjata.
 * 
 */
public void tembak (){
 System.out.println("M16 = Trrrrrr Trrrrrrrrrr Trrrrr !!! "); 
}
}

class Bazhoka turunan dari class Senjata

public class Bazhoka extends Senjata {
public void tembak (){
 System.out.println("Bazoka = Booooomm Bommmm Bomm !!!"); 
} 
}

class Pistol turunan dari class Senjata

public class Pistol extends Senjata {
//tidak mendeklarasikan apa apa , penjelasan dan maksud di bawah.
}

class Rambo

public class Rambo {
private Senjata senjata; //pengEnkapsulasi ,senjata = private

//Supaya bisa di akses kelas lain ,Dibuatlah method getter setter di bawah ini !
public Senjata getSenjata() {
 return senjata;
}

public void setSenjata(Senjata senjata) {
 this.senjata = senjata;
}
//end

//fungsi menembak 
public void Menembak(){
 senjata.tembak();
 
}
}

class Tester , yakni class main.

public class Tester {

 
 public static void main(String[] args) {
  // TODO Auto-generated method stub
  M16 m16 = new M16();//membuat objek dari kelas M16
  Pistol pistol = new Pistol();//membuat objek dari kelas Pistol
  Bazhoka bazhoka = new Bazhoka();//membuat objek dari kelas Bazhoka
  Rambo rambo = new Rambo();//membuat objek dari kelas Rambo
 
  //==pollymorphysm========//
  rambo.setSenjata(m16);//rambo saya kasih senjata m16 ==> objek m16 diatas dari kelas M16.
  rambo.Menembak();// dan rambo menembak bunyi trrr trr trrrr ,lihat hasil run
  //
  rambo.setSenjata(bazhoka);//rambo saya kasih senjata bazoka
  rambo.Menembak();//dan rambo menembak
  //
  rambo.setSenjata(pistol);//rambo saya kasih senjata pistol
  rambo.Menembak();//dan rambo menembak 
  /*
   * inheritance/pewarisan
   * Hasil dari Runing , bahwa bunyi dari "pistol" adalah Dorr doorr..
   * Padahal di kelas Pistol sendiri tidak ada deklarasi apa apa (lihat kelas Pistol).
   * Nah itu yang di sebut inherintance . bahwa doorr dorr di warisi dari kelas Senjata .
   * 
   * */
  //=pollymorphysm end============//
 }

}

Oke . Di dalam script sudah ada sedikit penjelasn penjelasan dari OOP tersebut . Semoga Bermanfaat bagi kalian . Terimakasih sudah berkunjung di blog saya .