[nchreyes]

Hi guys, thanks for your support and patience, I am testing this code in order to write and read text files on my BB but when I compile I got this

String _PalabrasURL = "file:///SDCard/ahorcado/ahorcado.txt";
FileConnection fconn = (FileConnection)Connector.open(_PalabrasURL);

error message

symbol : variable Connector
location: class Ahorcado.Ahorcado
FileConnection fconn = (FileConnection)Connector.open(_PalabrasURL);
^

pointin to Connector.Open, I have include :
import javax.microedition.io.file.*;

Do I need something else in order to this code to work?

Thanks

Nelson

[irlennard]

You need to import javax.microedition.io.* too, for the Connector class.

-- Ian

[nchreyes]

thanks Ian, but now I getting this one

F:\BB\Ahorcado\Ahorcado.java:65: cannot find symbol
symbol : class Enumeration
location: class Ahorcado.Ahorcado
Enumeration e = FileSystemRegistry.listRoots();
^

any class missing? should I import another one?

Thanks for help me out.

Nelson

[richard.puckett]

Dude, look in the docs and find out which package these things are in. Then, import that package. This is how it goes with Java development.

Daily rant: Of course, if you were using a real IDE like Eclipse (basically !JDE) unresolved classes would be highlighted and you could just ctrl-shift-M to bring in the necessary imports.

BTW: Enumeration is in java.util. Please don't come back and ask about each unresolved symbol.

[nchreyes]

Originally Posted by richard.puckett

Dude, look in the docs and find out which package these things are in. Then, import that package. This is how it goes with Java development.

Daily rant: Of course, if you were using a real IDE like Eclipse (basically !JDE) unresolved classes would be highlighted and you could just ctrl-shift-M to bring in the necessary imports.

BTW: Enumeration is in java.util. Please don't come back and ask about each unresolved symbol.

Thanks , even Your are so rude with people that are learning, as I said in other thread I am student, this is my first aproach to java sure I am doing my homework, I have a lots of papers about classes , methods, and so far, thats what forums are for, persons like you that have a lot of experience helping people like me that is learning, so I will help in the future other people that needs help.

and Thanks again for you help hope it works I havent tried yet.

Nelson

[nchreyes]

As my friend from last reply suggest to do my homework here are packages I have include in my code, I dont know if are the right ones or I need more or less

import net.rim.device.api.ui.container.FlowFieldManager;
import net.rim.device.api.ui.component.LabelField;
import net.rim.device.api.ui.component.Status;
import net.rim.device.api.ui.UiApplication;
import net.rim.device.api.system.*;
import net.rim.device.api.ui.component.*;
import net.rim.device.api.ui.container.*;
import javax.microedition.io.*;
import javax.microedition.io.file.*;
import java.util.*;

F:\BB\Ahorcado\Ahorcado.java:50: cannot find symbol
symbol : method open(java.lang.String)
location: interface javax.microedition.io.Connection
Connection.open(_PalabrasURL);

any Idea?

Thanks

[richard.puckett]

Did you change "Connector" to "Connection"? The "open" method is in the "Connector" interface, not the "Connection" interface... Here's a sample. Let me know how it goes, amigo. If you're still getting problems please post all relevant code (enough to establish context, but not the whole app).

		
String fullPath = "file:///SDCard/foo.txt";
byte[] data = "foo".getBytes();

try {
    FileConnection fconn = (FileConnection) Connector.open(fullPath, Connector.READ_WRITE);

    if (fconn.exists()) {
        fconn.delete();
    }

    fconn.create();

    OutputStream os = fconn.openOutputStream();

    os.write(data);

    os.close();

    fconn.close();
}
catch (IOException e) {
    System.out.println("Oh noes!!1! " + e.toString());
}

[nchreyes]

Thanks Richard, I made some changes has you your code suggest here it is, but it looks a little different, and I got more doubts

boolean _sd=false; //to save result of SD validation
_sd=TieneTarjeta(); //here is a function to validate if a SD is inserted

FileConnection fconn; //a file connection
try
{
if (_sd) //if a SD is present, open or create a text file
{
String _PalabrasURL = "file:///SDCard/ahorcado/ahorcado.txt";
fconn = (FileConnection)Connector.open(_PalabrasURL);
// If no exception is thrown, then the URI is valid, but the file may or may not exist.
if (!fconn.exists())
Connector.open(_PalabrasURL); //this I am no sure, does it create it or just open it?

}
else
{
String _PalabrasURL = "file:///store/ahorcado/ahorcado.txt";
fconn = (FileConnection)Connector.open(_PalabrasURL);
// If no exception is thrown, then the URI is valid, but the file may or may not exist.
if (!fconn.exists())
Connector.open(_PalabrasURL);
}
}
catch (IOException ioe) //here jumps an error not find this symbol
{
//System.out.println("File error: " + ioe.toString());
}
fconn.close();

[CJLopez]

Take a look at this

Getting Started with the FileConnection APIs

[EmilieL]

Is it me or do I have the impression that, yes, this code is a J2ME one but Blackberrys don't support the APIs?
I've tried to import the packages but I always get errors...
I think it works with nokia cellphones though?

[richard.puckett]

It's certainly supported on BlackBerry. It requires version 4.2.0 or higher though.

[EmilieL]

I've tried 4.2.1.. didn't work out...
It still can't find the package :O
I'll investigate on that...
Thanks for the info

[nchreyes]

I fellows, I make code to work, but I still have some troubles handling text files and its resources, does any one can leadme to tutorial or code example how manage strings, text records, I will be really thanks.
I am trying to code a game for my son, I already did it on a windows app on C#, Hangup most of you must know it, you hava bank of words( my text file), app has to choose one randomly then show * on screen as many letters word has. I have not been able to count words on the text file, not even random a word, any Idea.