Comment on Tutorial - Getting Started with J2ME By Emiley J.



Comment Added by : ganesh

Comment Added at : 2012-10-17 10:34:00

Comment on Tutorial : Getting Started with J2ME By Emiley J.
i build j2me application for reading text file.......
it runs on emulator but when i deployed it on device it does not
work......
why this is ....happening.....
my mobile is Nokia 3110C
code...is......

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

public class ReadFile extends MIDlet implements CommandListener{
private Display display;
private Form form;
private Command read, exit;
private Alert alert;

public ReadFile(){
display = Display.getDisplay(this);
read = new Command("Read", Command.SCREEN, 1);
exit = new Command("Exit", Command.EXIT, 1);
form = new Form("Read File");
form.addCommand(exit);
form.addCommand(read);
form.setCommandListener(this);
}

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

public void pauseApp(){}

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

public void commandAction(Command c, Displayable s){
String label = c.getLabel();
if (label.equals("Read")){
String string = null;
try {
string = file();
} catch (UnsupportedEncodingException ex) {
ex.printStackTrace();
}
if (string != null){
alert = new Alert("Reading", string, null, null);
alert.setTimeout(Alert.FOREVER);
display.setCurrent(alert, form);
}
} else if (label.equals("Exit")){
destroyApp(false);
}
}

private String file() throws UnsupportedEncodingException{
InputStream is = getClass().getResourceAsStream("/data/aardvark.txt");
InputStreamReader isr=new InputStreamReader(is,"Unicode");
StringBuffer sb = new StringBuffer();
try{
int chars, i = 0;
while ((chars = isr.read()) != -1){
sb.append((char) chars);
}
return sb.toString();
}catch (Exception e){}
return null;
}
}


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Archived Comments

1. how to create a do while,the output wil show the m
View Tutorial          By: waa at 2009-09-02 19:23:45

2. Excellent.. simple and too good to understand
View Tutorial          By: venkat at 2010-05-11 00:30:02

3. Hi Jigar,
The above applicatio

View Tutorial          By: Kiran at 2011-12-26 04:00:24

4. I request to java beacuse i hope java language

View Tutorial          By: jeey at 2011-07-06 07:59:07

5. not good not bad...............
View Tutorial          By: mahesh at 2010-10-05 00:45:54

6. thank you, this best for student like us,
View Tutorial          By: Srinath at 2012-05-12 15:04:03

7. what about strings in J2ME ?
View Tutorial          By: Swapnil at 2012-07-20 09:19:15

8. estimado lo que sucede es que solo cuando es Strin
View Tutorial          By: hormiga at 2013-01-07 00:11:54

9. my code is unable to open included files
ho

View Tutorial          By: MANAS at 2013-09-08 05:44:46

10. Excellent!!!!!!!!!!!!
View Tutorial          By: Ramana at 2009-01-02 19:31:58