Basic question about file Creation in J2ME

[kumar mdu]

Friends,

I am new to writing and reading a file. I did sample sample by using this link http://wiki.forum.nokia.com/index.php/How_to_write_data_to_a_file_in_Java_ME.

In real devices, file stored in Gallery's Images folder.

Now, I trying in emulator, and did the path like "file://C:/pro.txt". where i can find the file in system? I checked here C:\WTK2.5.2_01\j2mewtk_template\appdb\DefaultColorPhone\filesystem\root1. but there is no file created.


How can i store in emulator and where i can find the path of the text file?

regards,
kumar

[Gopinath Karyadath]

 String checkMCRoot() {
        String rootMC = System.getProperty("fileconn.dir.memorycard");
        String fpath = null;
        if (rootMC != null) {
            fpath = rootMC;
        } else {
            fpath = getRootlist();
        }
        return fpath;
    }

    private  String getRootlist() {
        String des = null;
        Enumeration roots = null;
        try {
            roots = javax.microedition.io.file.FileSystemRegistry.listRoots();
            while (roots.hasMoreElements()) {
                des = ("file:///" + (String) roots.nextElement());
//                System.out.println((String) roots.nextElement()+ " ayyooo/");
                break;
            }
        } catch (NoClassDefFoundError e) {
            return null;
        } catch (Exception e) {
            return null;
        }

        return des;

    }

 private DataInputStream Fileconnection(String filePath) {
        OutputStream os = null;
       DataInputStream is = null;
        try {
            FileConnection filecon = (FileConnection) javax.microedition.io.Connector.open(file,
                    javax.microedition.io.Connector.READ_WRITE);
            if (!filecon.exists()) {
                     filecon.create();
                    os = filecon.openOutputStream();

            } else {
                   is = new DataInputStream(filecon.openDataInputStream());
            }
            filecon.close();
        } catch (IOException ioe) {
        } catch (java.lang.IllegalArgumentException e) {
        }
        return is  ;
    }

Happy coding........

Regards
Gopinath

[kumar mdu]

Thanks gopi,

I'm trying in emulator, that is sun wtk!!. i set the file path like 'file:///root1/myfile.txt',

i am not able to save the file. I'm not able to see the file in my system not in mobile(as i checking in emulator).

what is the file path to do for emulator..?'

Help me to solve this.?

kumar

[kumar mdu]

hi,

this is my code for creating a file and write data

try {

			FileConnection c = (FileConnection) Connector.open(
					"file:///C:/Documents and Settings/kumar/myTxt.txt", Connector.READ_WRITE);

			if (c.exists()) {
				System.out.println("exist");

			} else {
				System.out.println("no exist");
				c.create();

				OutputStream out = c.openOutputStream();
				String userText = text.getString();
				out.write(userText.getBytes());
				// out.flush();
				out.close();
				c.close();

			}
		} catch (Exception e) {

		}

I'm using Sun WTK, the file path as "file:///C:/Documents and Settings/kumar/myTxt.txt". The program executes but i am not able to find the file?


What i made wrong.?

[kumar mdu]

Hi , I tried this also, like "file:///root1/photos/login.txt" and "file:///C:/login.txt" but its not working

How can i set the path for checking in sun wtk emulator..?

please help me,


kumar