GameActions

Kali ini kita akan membuat Gambe actions, dengan menggunakan menginport Midletnya sekalian. IDE yang digunakan dalam contoh ini adalah Net-Beans 5.5 dengan mobility-nya...!
lansung saja buat project baru di Net_Beansnya dengan nama file GameAction, lalu ketikan kode dibawah ini :

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;

public class GameActions extends MIDlet
{
private Display display; // The display
private GameActionCanvas canvas; // Canvas

public GameActions()
{
display = Display.getDisplay(this);
canvas = new GameActionCanvas(this);
}

protected void startApp()
{
display.setCurrent( canvas );
}

protected void pauseApp()
{ }

protected void destroyApp( boolean unconditional )
{ }

public void exitMIDlet()
{
destroyApp(true);
notifyDestroyed();
}
}

/*--------------------------------------------------
* GameActionCanvas.java
*
* Game action event handling
*-------------------------------------------------*/
class GameActionCanvas extends Canvas implements CommandListener
{
private Command cmExit; // Exit midlet
private String keyText = null; // Key code text
private GameActions midlet;

/*--------------------------------------------------
* Constructor
*-------------------------------------------------*/
public GameActionCanvas(GameActions midlet)
{
this.midlet = midlet;

// Create exit command & listen for events
cmExit = new Command("Exit", Command.EXIT, 1);
addCommand(cmExit);
setCommandListener(this);
}

/*--------------------------------------------------
* Paint the text representing the key code
*-------------------------------------------------*/
protected void paint(Graphics g)
{
// Clear the background (to white)
g.setColor(255, 255, 255);
g.fillRect(0, 0, getWidth(), getHeight());

// Set color and draw text
if (keyText != null)
{
// Draw with black pen
g.setColor(0, 0, 0);
// Center the text
g.drawString(keyText, getWidth()/2, getHeight()/2, Graphics.TOP | Graphics.HCENTER);
}
}

/*--------------------------------------------------
* Command event handling
*-------------------------------------------------*/
public void commandAction(Command c, Displayable d)
{
if (c == cmExit)
midlet.exitMIDlet();
}

/*--------------------------------------------------
* Game action event handling
* A game action will be converted into a key code
* and handed off to this method
*-------------------------------------------------*/
protected void keyPressed(int keyCode)
{
switch (getGameAction(keyCode))
{
// Place logic of each action inside the case
case FIRE:
case UP:
case DOWN:
case LEFT:
case RIGHT:
case GAME_A:
case GAME_B:
case GAME_C:
case GAME_D:
default:
// Print the text of the game action
keyText = getKeyName(keyCode);
}
repaint();
}
}

Baca Selengkapnya......

Membuat Kalkulator dengan J Creator

MEmbuat Kalkulator dengan Menggunakan J Creator
Tidak terlalu sulit, yang penting di PC Mu sudah ada minimal J2SDK lalu J Creator, Lalu Copy kan Kode Dibawah ini :

import java.awt.*;
import java.awt.event.*;

public class CalculatorH2_DIIITKJ
{

Font Bold=new Font("Helvetica", Font.BOLD, 20);
Label TampilanLayar = new Label("MULAI",Label.RIGHT);
Label TampilanLayarkiri = new Label("",Label.RIGHT);
Label TampilanLayarkanan = new Label("",Label.CENTER);
Button Panggil_Simpanan=new Button("MR");
Button Bersihkan_Simpanan=new Button("MC");


public void map_KalkulOgut()
{
event_handler e1=new event_handler ( );
Frame KalkulOgut=new Frame(" ................................... ");
KalkulOgut.setResizable(true);
KalkulOgut.setSize(520,400);
KalkulOgut.setBackground(Color.blue);
KalkulOgut.setLayout(null);


//Tampilan Display. bisa di edit menggunakan Label
TampilanLayar.setBounds(70,50,360,40);
TampilanLayar.setFont(new Font("Helvetica", Font.BOLD, 25));
TampilanLayar.setForeground(Color.white);
TampilanLayar.setBackground(Color.red);
KalkulOgut.add(TampilanLayar);

TampilanLayarkanan.setBounds(68,48,364,44);
TampilanLayarkanan.setFont(new Font("Algerian", Font.BOLD, 40));
TampilanLayarkanan.setForeground(Color.red);
TampilanLayarkanan.setBackground(Color.green);
KalkulOgut.add(TampilanLayarkanan);

//Menambah Tombol 1 sampai dengan 0
Button simpanan=new Button("M+");
simpanan.setBounds(72,96,60,34);
simpanan.setBackground(Color.white);
simpanan.setForeground(Color.red);
simpanan.setFont(Bold);
simpanan.addActionListener(e1);
KalkulOgut.add(simpanan);

Bersihkan_Simpanan.setEnabled(false);
Bersihkan_Simpanan.setBounds(136,96,60,34);
Bersihkan_Simpanan.setBackground(Color.black);
Bersihkan_Simpanan.setForeground(Color.red);
Bersihkan_Simpanan.setFont(Bold);
Bersihkan_Simpanan.addActionListener(e1);
KalkulOgut.add(Bersihkan_Simpanan);

Panggil_Simpanan.setBounds(200,96,60,34);
Panggil_Simpanan.setBackground(Color.yellow);
Panggil_Simpanan.setForeground(Color.red);
Panggil_Simpanan.setFont(Bold);
Panggil_Simpanan.addActionListener(e1);
Panggil_Simpanan.setEnabled(false);
KalkulOgut.add(Panggil_Simpanan);

Button satu=new Button("1");
satu.setBounds(72,134,60,34);
satu.setBackground(Color.orange);
satu.setFont(Bold);
satu.addActionListener(e1);
KalkulOgut.add(satu);

Button dua=new Button("2");
dua.addActionListener(e1);
dua.setBackground(Color.orange);
dua.setBounds(136,134,60,34);
dua.setFont(Bold);
KalkulOgut.add(dua);

Button tiga=new Button("3");
tiga.addActionListener(e1);
tiga.setBackground(Color.orange);
tiga.setBounds(200,134,60,34);
tiga.setFont(Bold);
KalkulOgut.add(tiga);

Button empat=new Button("4");
empat.setBackground(Color.orange);
empat.addActionListener(e1);
empat.setFont(Bold);
empat.setBounds(72,172,60,34);
KalkulOgut.add(empat);

Button lima=new Button("5");
lima.setBackground(Color.orange);
lima.addActionListener(e1);
lima.setFont(Bold);
lima.setBounds(136,172,60,34);
KalkulOgut.add(lima);

Button enam=new Button("6");
enam.setBackground(Color.orange);
enam.addActionListener(e1);
enam.setFont(Bold);
enam.setBounds(200,172,60,34);
KalkulOgut.add(enam);

Button tujuh=new Button("7");
tujuh.setBackground(Color.orange);
tujuh.addActionListener(e1);
tujuh.setFont(Bold);
tujuh.setBounds(72,210,60,34);
KalkulOgut.add(tujuh);

Button delapan=new Button("8");
delapan.setBackground(Color.orange);
delapan.addActionListener(e1);
delapan.setFont(Bold);
delapan.setBounds(136,210,60,34);
KalkulOgut.add(delapan);

Button sembilan=new Button("9");
sembilan.setBackground(Color.orange);
sembilan.addActionListener(e1);
sembilan.setFont(Bold);
sembilan.setBounds(200,210,60,34);
KalkulOgut.add(sembilan);

Button kosong=new Button("0");
kosong.setBackground(Color.orange);
kosong.addActionListener(e1);
kosong.setFont(Bold);
kosong.setBounds(136,248,60,34);
KalkulOgut.add(kosong);

Button nanin =new Button("STIMIK - IKMI CIREBON");
nanin.setForeground(Color.red);
nanin.setBackground(Color.green);
nanin.addActionListener(e1);
nanin.setFont(Bold);
nanin.setBounds(72,290,358,50);
KalkulOgut.add(nanin);

Label simbol =new Label("BRAVO MAHASISWA DIII TKJ KELAS H2 STIMIK ",Label.LEFT);
simbol.setForeground(Color.white);
simbol.setFont(Bold);
simbol.setBounds(33,350,550,50);
KalkulOgut.add(simbol);

//Tombol operasi
Button TombolBagi = new Button("BAGI");
TombolBagi.setBackground(Color.gray);
TombolBagi.addActionListener(e1);
TombolBagi.setBounds(264,134,100,34);
TombolBagi.setForeground(Color.green);
TombolBagi.setFont(Bold);
KalkulOgut.add(TombolBagi);

Button TombolKali = new Button("KALI");
TombolKali.setBackground(Color.gray);
TombolKali.addActionListener(e1);
TombolKali.setBounds(264,172,100,34);
TombolKali.setForeground(Color.green);
TombolKali.setFont(Bold);
KalkulOgut.add(TombolKali);

Button TombolPengurangan = new Button("KIRANG");
TombolPengurangan.setBackground(Color.gray);
TombolPengurangan.addActionListener(e1);
TombolPengurangan.setBounds(264,210,100,34);
TombolPengurangan.setForeground(Color.green);
TombolPengurangan.setFont(Bold);
KalkulOgut.add(TombolPengurangan);

Button TombolTambah= new Button("TAMBIH");
TombolTambah.setBackground(Color.gray);
TombolTambah.addActionListener(e1);
TombolTambah.setBounds(264,248,100,34);
TombolTambah.setForeground(Color.green);
TombolTambah.setFont(Bold);
KalkulOgut.add(TombolTambah);

Button titik= new Button(".");
titik.setBackground(Color.gray);
titik.addActionListener(e1);
titik.setBounds(200,248,60,34);
titik.setForeground(Color.green);
titik.setFont(Bold);
KalkulOgut.add(titik);

Button TombolTambahKurang = new Button("+/-");
TombolTambahKurang.setBackground(Color.gray);
TombolTambahKurang.addActionListener(e1);
TombolTambahKurang.setBounds(72,248,60,34);
TombolTambahKurang.setForeground(Color.green);
TombolTambahKurang.setFont(Bold);
KalkulOgut.add(TombolTambahKurang);

Button Pembersih = new Button("C");
Pembersih.setBackground(Color.red);
Pembersih.addActionListener(e1);
Pembersih.setBounds(370,134,60,34);
Pembersih.setForeground(Color.white);
Pembersih.setFont(Bold);
KalkulOgut.add(Pembersih);

Button persenBae = new Button("%");
persenBae.setBackground(Color.gray);
persenBae.addActionListener(e1);
persenBae.setBounds(370,172,60,34);
persenBae.setForeground(Color.green);
persenBae.setFont(Bold);
KalkulOgut.add(persenBae);

Button satu_Dibagi_X = new Button("1/x");
satu_Dibagi_X.setBackground(Color.gray);
satu_Dibagi_X.addActionListener(e1);
satu_Dibagi_X.setBounds(370,210,60,34);
satu_Dibagi_X.setForeground(Color.green);
satu_Dibagi_X.setFont(Bold);
KalkulOgut.add(satu_Dibagi_X);

Button SamiSareng = new Button("=");
SamiSareng.setBackground(Color.gray);
SamiSareng.addActionListener(e1);
SamiSareng.setBounds(370,248,60,34);
SamiSareng.setForeground(Color.green);
SamiSareng.setFont(Bold);
KalkulOgut.add(SamiSareng);
KalkulOgut.setVisible(true);
}
public static void main(String args[])
{

CalculatorH2_DIIITKJ m1=new CalculatorH2_DIIITKJ();
m1.map_KalkulOgut();
}
String temp="";
String sign="";
double result=0;

//Membuat perubahan Hasil = sebelum 0

double temp_minus=0;
boolean flag_minus_first=true;
boolean mul_flag=true;
double mul_temp=1;
double memory;
boolean memory_flag=false;
boolean divide_flag=true;
double divide_temp=1;
boolean mr_flag=false;

///Penggunaan mekanisme untuk penggunaan memori;
boolean point_flag=true;

//boolean tambah_bagi_kurang_flag=true;
private class event_handler
implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
String cmd=e.getActionCommand();
System.out.println(cmd);

//****************************************************************************

if(cmd=="+/-")
{
//Tambah_bagi_pengurangan_flag=true
//apabila pemakai telah menekan tombol +/- maka nilai dari temp akan ditampikan di layar
//tampilan tidak menyaring hasil dari variabel

if(temp!="" )
//&& plus_slash_minus_flag==true && )
{
if(Double.parseDouble(temp)>0)
{
temp=("KIRANG"+ temp);
System.out.println("temp="+temp);
TampilanLayar.setText(temp);
}
else if(Double.parseDouble(temp)<0)
{
temp=temp.substring(1,temp.length());
System.out.println("temp="+temp);

TampilanLayar.setText(temp);
}

//tambah_slash_kurang_flag=false;
}

//enters when user press +/- and value from result variable is showing
//on screen in that case temp is always empty conditionly
if(temp==" " )

//&& plus_slash_minus_flag==false)
{
String pm="";
pm=String.valueOf(result);
if(result>0)
{
pm="KIRANG"+pm;
result=Double.parseDouble(pm);
TampilanLayar.setText(String.valueOf(result));
pm="";
}
else if(result<0)
{
pm=pm.substring(1,pm.length());
result=Double.parseDouble(pm);
TampilanLayar.setText(String.valueOf(result));
pm="";
}
System.out.println("result="+result);
}
}

//****************************************************************************
//******************

if(cmd=="%")
{
point_flag=true;
if(temp!="")
{
result=result/Double.parseDouble(temp);
result=result*100;
TampilanLayar.setText(String.valueOf(result));
}
// kontruksi ada dibawah ini
}
//****************************************************************************
// kemandirian operasi

if(cmd=="1/x")
{
point_flag=true;
if(temp!="")
{
double byx=0;
byx=Double.parseDouble(temp);
byx=1/byx;
temp=String.valueOf(byx);
TampilanLayar.setText(temp);
}
if(temp=="")
{
result=1/result;
TampilanLayar.setText(String.valueOf(result));
}

//kontruksi dibawah ini juga coy...!
}
//****************************************************************************
//if(cmd=="+/-")
//{
//poin_flag=true;
//}
//****************************************************************************

if(cmd=="MC")
{
point_flag=true;
//Harus menambahkan flag comaon dalam semua operasi
//dan harus dicatat bila ada penambahan oprasi baru setelah di bawah ini
memory_flag=false;

//mempunyai makna tidak ada nilai yang di simpan dalam M+
memory=0;
Panggil_Simpanan.setEnabled(false);
Bersihkan_Simpanan.setEnabled(false);
}

//****************************************************************************
//******************

if(cmd=="M+")
{
point_flag=true;
if(mr_flag==false)

//yang di gunakan untuk menyimpan dari suatu hasil
if(temp!="")
{
memory_flag=true;
temp=TampilanLayar.getText();
memory=Double.parseDouble(temp);
mul_flag=false;
flag_minus_first=false;
divide_flag=false;
Panggil_Simpanan.setEnabled(true);
Bersihkan_Simpanan.setEnabled(true);
}
if(mr_flag==true)
{
System.out.println("ENTERED IN M+ where mr_flad=false");

memory_flag=true;
result=Double.parseDouble(TampilanLayar.getText());
memory=result;
mul_flag=false;
flag_minus_first=false;
divide_flag=false;
mr_flag=false;
Panggil_Simpanan.setEnabled(true);
Bersihkan_Simpanan.setEnabled(true);
}
}
//****************************************************************************
if(cmd=="MR")
{
point_flag=true;
if(memory_flag==true)
//pemeriksaan nomor berapa saja yang disimpan dengan penggunaan M+
{
temp=String.valueOf(memory);
TampilanLayar.setText(temp);
}
}
//****************************************************************************
if(cmd=="BAGI")
{
point_flag=true;
if(sign=="KIRANG" && temp!="")
{
result=result-
Double.parseDouble(temp);
TampilanLayar.setText(String.valueOf(result));
temp="";
divide_flag=false;
}
if(sign=="TAMBIH" && temp!="")
{
result=Double.parseDouble(temp)+result;
TampilanLayar.setText(String.valueOf(result));
temp="";
divide_flag=false;
}
if(sign=="KALI" && temp!="")
{
result=result*Double.parseDouble(temp);
TampilanLayar.setText(String.valueOf(result));
temp="";
divide_flag=false;
}
sign="BAGI";
if(temp!="")
{
if(divide_flag==true)
{
divide_temp=Double.parseDouble(temp)/divide_temp;
System.out.println("Divide_temp="+divide_temp);
TampilanLayar.setText(String.valueOf(divide_temp));
temp="";
divide_flag=false;
result=divide_temp;
System.out.println("result="+result);
}
if(divide_flag==false && temp!="")
{
result=result/Double.parseDouble(temp);
TampilanLayar.setText(String.valueOf(result));
System.out.println("result="+result);
temp="";
}
}
}
//****************************************************************************
//******************
if(cmd=="KALI")
{
point_flag=true;
if(sign=="BAGI" && temp!="")
{
result=result/Double.parseDouble(temp);
TampilanLayar.setText(String.valueOf(result));
System.out.println("result="+result);
temp="";
mul_flag=false;
}
if(sign=="TAMBIH" && temp!="")
{
result=Double.parseDouble(temp)+result;
TampilanLayar.setText(String.valueOf(result));
temp="";
mul_flag=false;

//pengujian statemen beta
}
if(sign=="KIRANG" && temp!="")
{
result=result-Double.parseDouble(temp);
TampilanLayar.setText(String.valueOf(result));
temp="";
mul_flag=false;

/// pengujian statemen beta ;
}
sign="KALI";
if(temp!="")
{
if(mul_flag==true)
{
System.out.println("Entered in X where temp!=empty");
mul_temp=mul_temp*Double.parseDouble(temp);
TampilanLayar.setText(String.valueOf(mul_temp));
temp="";
result=mul_temp;
System.out.println("result="+result);
mul_flag=false;
}
else
{
System.out.println("Entered in cmd=X and where mul_flag=false");
result=result*Double.parseDouble(temp);
TampilanLayar.setText(String.valueOf(result));////////////////
temp="";
}
}
}

//****************************************************************************
//******************
if(cmd=="TAMBIH")
{
point_flag=true;
if(sign=="BAGI" && temp!="")
{
result=result/Double.parseDouble(temp);
TampilanLayar.setText(String.valueOf(result));
System.out.println("result="+result);
temp="";
}
if(sign=="KALI" && temp!="")
{
result=result*Double.parseDouble(temp);
TampilanLayar.setText(String.valueOf(result));
temp="";
}
if(sign=="KIRANG" && temp!="")

//e.g 2-2+4 for this like operation
{
result=result-Double.parseDouble(temp);
TampilanLayar.setText(String.valueOf(result));
temp="";
}
sign="TAMBIH";
if(temp!="")
{
mul_flag=false;
System.out.println("Entered in + temp!=empty ");
result=Double.parseDouble(temp)+result;
TampilanLayar.setText(String.valueOf(result));
temp="";
System.out.println("result="+result);
System.out.println(String.valueOf(temp));
}
else
{
}
}

//****************************************************************************
//******************
if(cmd=="KIRANG")
{
point_flag=true;
if(sign=="BAGI" && temp!="")
{
result=result/Double.parseDouble(temp);
TampilanLayar.setText(String.valueOf(result));
System.out.println("result="+result);
temp="";
flag_minus_first=false;
}
if(sign=="KALI" && temp!="")
{
result=result*Double.parseDouble(temp);
TampilanLayar.setText(String.valueOf(result));
temp="";
flag_minus_first=false;
}
if(sign=="TAMBIH" && temp!="")

//jika pengguna memasukan 2-2+ atau nomer manapun
{
result=Double.parseDouble(temp)+result;
TampilanLayar.setText(String.valueOf(result));
temp="";
flag_minus_first=false;
}
sign="KIRANG";
if(temp!="")
{
mul_flag=false;
System.out.println(" Entered in - where temp!=empty ");
if(flag_minus_first==true)

//kapan pertama kali pemakai melaksanakan-operasi setelah mulai program
{
result=Double.parseDouble(temp)-result;
flag_minus_first=false;
System.out.println(result);
}
else
{
result=result-Double.parseDouble(temp);
System.out.println(result);
}
TampilanLayar.setText(String.valueOf(result));
temp="";
}
}

//****************************************************************************
if(cmd=="=")
{
point_flag=true;
if(sign=="TAMBIH")
if(temp!="")
{
mul_flag=false;
divide_flag=false;
flag_minus_first=false;

//pengujian kemungkinan pemindahan
result=Double.parseDouble(temp)+result;
TampilanLayar.setText(String.valueOf(result));
sign="";
temp="";
System.out.println("Hasil="+result);
mr_flag=true;

///penggunaan memori untuk pemanggilan mekanisme
}
if(sign=="KIRANG")
if(temp!="")
{
mul_flag=false;
divide_flag=false;
flag_minus_first=false;

//pengujian kemungkinan pemindahan
result=result-Double.parseDouble(temp);
TampilanLayar.setText(String.valueOf(result));
sign="";
temp="";
System.out.println("result="+result);
mr_flag=true;

///penggunaan memori untuk pemanggilan mekanisme
}
if(sign=="KALI")
if(temp!="")
{
mul_flag=false;
divide_flag=false;
flag_minus_first=false;

//pengujian kemungkinan pemindahan
result=result*Double.parseDouble(temp);
TampilanLayar.setText(String.valueOf(result));
sign="";
temp="";
mr_flag=true;

///penggunaan memori untuk pemanggilan mekanisme
//mul_temp=1;
}
if(sign=="BAGI")
if(temp!="")
{
mul_flag=false;
divide_flag=false;
flag_minus_first=false;

//pengujian kemungkinan pemindahan
result=result/Double.parseDouble(temp);
TampilanLayar.setText(String.valueOf(result));
sign="";
temp="";
mr_flag=true;

///penggunaan memori untuk pemanggilan mekanisme
}
if(sign=="")
if(temp!="")
//pengujian kemungkinan pemindahan
{
result=Double.parseDouble(TampilanLayar.getText());
System.out.println("result="+TampilanLayar.getText());
mul_flag=false;
mr_flag=true;
///penggunaan memori untuk pemanggilan mekanisme (tkj tea pikirkeunuen.just kidul..he.he.)
}
temp="";
}
//****************************************************************************
//******************

if(cmd=="."||cmd=="0" || cmd=="1" ||
cmd=="2" || cmd=="3" || cmd=="4" || cmd=="5" || cmd=="6" || cmd=="7" ||
cmd=="8" || cmd=="9")
{
if(cmd=="." && temp=="" && point_flag==true)
{
temp="0";
temp=temp+cmd;
point_flag=false;
}
else if(cmd=="." && temp!="" && point_flag==true)
{
temp=temp+cmd;
point_flag=false;
}
//temp=temp+cmd;
else if(cmd!=".")
temp=temp+cmd;
TampilanLayar.setText(temp);
System.out.println("temp"+temp);
mr_flag=false;
}

//****************************************************************************
//******************
if(cmd=="C")
{
//tambah_slash_minus_flag=true;
point_flag=true;
mr_flag=false;
divide_temp=1;
divide_flag=true;
mul_flag=true;
temp="";
TampilanLayar.setText("SALAM HANGAT MHS TKJ H2");
result=0;
sign="";
flag_minus_first=true;
mul_temp=1;
System.out.println("result="+result);
System.out.println("temp="+temp);
}

//****************************************************************************


}
}

}

Baca Selengkapnya......