read strings of a file

[stein]

hi,

i found a lot of examples how to read data from one file but i can't understand how i do it by of InputStream and method read.

someone could give me a example ??

[r2j7]

Hello stein,

here's an example (under the 'Solution' title):

http://wiki.forum.nokia.com/index.ph...rom_a_JAR_file

Regards,
r2j7

[stein]

but now i have another problem case i can't access to the file i use this url = "file:///C:/myfile.txt"; but exception tells me that i have no permission to write there, can explain me how work directories on n70, i see a tutorial but only specifies the mai drive don´t talk about the directories that can be used
ty,

[r2j7]

Hello stein,

Below's a quote from:

http://www.forum.nokia.com/info/sw.n..._0_en.zip.html

An example of a typical file URL in a S60 device looks as follows:
file:///C:/data/Images/Image(001).jpg

Based on the above, try something like:

C:/data/myfile.txt

Regards,
r2j7

[stein]

ty for your help, but i try what you suggest and don´t work, my code to save info on file:

 String url = "file:///c:/nokia/myfile.txt";
        FileConnection conn = null;
        
        try {
            System.out.println("\na guardar informação-------------------------------------->1\n");
            conn = (FileConnection) Connector.open( url,Connector.READ_WRITE );
            
            if( conn.exists()==false )
                conn.create();// create the file
            
            OutputStream out = conn.openOutputStream();
            
            for (int i = 0; i < horaMiranda.length; i++) {
                out.write(this.horaMiranda[i].toString().getBytes());
                System.out.println("\na guardar informação-------------------------------------->2\n");
            }
            
            conn.close();
        } catch( IOException e ){
            System.out.println("\nERRO\n");
        } catch( SecurityException e ){
            System.out.println("\nNo permissions to write \n");
        }

can someone tell me what is wrong for the code give me exception and don´t let me write on file..



ty,

[r2j7]

Hello stein,

String url = "file:///c:/nokia/myfile.txt";

Did you try using

String url = "file:///C:/data/myfile.txt";

or

String url = "file:///C:/Data/myfile.txt";

?

Regards,
r2j7

[stein]

ty for help.
i try what you sad but don't works, i don't no that is important but i use s60 3rd edition sdk fp2 with s60 emulator. i have to change any option on emulator?

[ben-efiz]

ty for help.
i try what you sad but don't works, i don't no that is important but i use s60 3rd edition sdk fp2 with s60 emulator. i have to change any option on emulator?

If you use emulator, try to put your file to the root folder of the emulator. For me it is

C:\Programme\Java\WTK25\appdb\DefaultColorPhone\filesystem\root\


Then you call

conn = (FileConnection) Connector.open( "file:///root/myfile.txt",Connector.READ_WRITE )

Greetings
Ben

[stein]

i follow your indications, but don´t work still say that i have no permission, whe i put the directory root give me a error but wasn't error of permission.

i use the listroot and the only directories that listed are:


Phone memory/
C:
i already add the options on java platform manager for read and write.
i need change any option, to permit write and read files?
any ideia to fix the problem??

[stein]

i really need help? i want to learn how works with files.

[stein]

i had done everything and can't write the file case i don't have permission. i really need help?

[ben-efiz]

You have to set the permissions in your jad file:

MIDlet-Permissions: javax.microedition.io.Connector.file.read, javax.microedition.io.Connector.file.write

Greetings
Ben