MasWawa™

Tadi malem belajar menggunakan Timer di J2ME. Iseng iseng untuk percobaan pertama aku buat aplikasi StopWatch untuk Handphone. Mudah mudahan aja coding nya bener. kalo ada yang gak bener ato salah semua mohon ralatnya ya. Oya ga ada screenShotnya. padahal tadi udah tak bikin. tapi lupa gak kebawa. masih di komputer rumah.

Ini contoh code nya:

/**
*
* @author MasWawa
*/
import java.util.*;
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;

public class StopWatch extends MIDlet implements CommandListener{
private Display display;
private Form fmMain;
private TextField text;
private Command cmExit;
private Command cmStart;
private Command cmStop;
private Timer tm;
private TimerTask tt;
private int count,count1,count2,count3;

public StopWatch(){
display = Display.getDisplay(this);
text = new TextField(null, " 00 : 00 : 00 : 0", 25, TextField.ANY);
nolkan();
fmMain = new Form("Stopwatch Ku");
fmMain.append("Start untuk Memulai dan Stop untuk berhenti");
fmMain.append(text);
cmExit = new Command("Exit", Command.EXIT, 1);
cmStart = new Command("Start",Command.OK,2);
cmStop= new Command("Stop", Command.STOP, 3);

addComm(1);

}
private void nolkan(){
count=0;
count1=0;
count2=0;
count3=0;
}
private void start(){
nolkan();
tm = new Timer();
tt = new TimerRun();
tm.schedule(tt,0,100);
}
private void addComm(int code){
if (code == 1){
fmMain.addCommand(cmStart);
}else if(code == 2){
fmMain.addCommand(cmStop);
}
fmMain.addCommand(cmExit);
fmMain.setCommandListener(this);
}

public void startApp (){
display.setCurrent(fmMain);
}

public void destroyApp (boolean unconditional){
notifyDestroyed();
}

public void pauseApp (){

}

public void commandAction(Command c, Displayable d){
if (c == cmStart){
fmMain.removeCommand(c);
addComm(2);
start();

} else if (c == cmStop){
fmMain.removeCommand(c);
addComm(1);
tm.cancel();

}else if (c == cmExit){
destroyApp(true);
}
}

private class TimerRun extends TimerTask{
public final void run(){
if(++count > 9){
count=0;
++count1;
}
if(count1 > 59){
count1=0;
++count2;
}
if(count2 > 59){
count2=0;
++count3;
}
if (count3 > 23){
nolkan();
}
text.setString(" " + count3 + " : "+ count2 +
" : " + count1 + " : " + count);
}
}
}

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