Java Development

[avi_yach]

public class CreateFileApp extends Application 

{    public static void main(String[] args)    

{        CreateFileApp app = new CreateFileApp();       

app.setAcceptEvents(false);       

try         {             

FileConnection fc = (FileConnection)Connector.open("file:///store/home/user/newfile.txt");             

if (!fc.exists())             // CONTROLLED ACCESS EXCEPTION

{                 

fc.mkdir();              

}             

fc.close();         

}         catch (IOException ioe)        

 {            System.out.println(ioe.getMessage() );         

}   

}

I am trying to run this sample application found in BB Document;

When I tried debugging the application it is throwing controlled access exception at the above hightd line.

In simulator it is popping up a error message Applciation Terminated: File system has been denied the "Files " permission.

Any help is welcomed.

A Y

[maadani]

Hi avi_yach,

In the simulator settings, there is an check-box to use the computer as the file system. you should check this option.

In your device, try changing the application permissions.

E. 

[CMY]

The "store/home/user" directory is the internal memory so there is no need to check the box to use the computer as the file system. Check to make sure that security is disabled in the simulator.

[alishaik786]

When you get controlAccessException then It is better to clean and restart/only restart the simulator. You should not get this exception in device because you are again and again debugging in simlator. This is not  the case in device. That's why.

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[avi_yach]

Hello maadani, thanks for your reply, I have enabled this option "using computer as file system". I will share the procedure which I followed, I created a folder called SDCard in my private directory and in simulator memory settings I matched the memory to SDCard on the H folder.

A Y

[avi_yach]

Hello CMY, thanks for your reply, can you suggest me how to change the simulator settings? In couple of posts they have suggested to disable simulator security settings. Is it possible?

A Y 

[avi_yach]

Thanks for your reply Alishaik, I tried this, but no luck

A Y

[maadani]

Another couple of things that might help:

1. Try to create a directory under "file:///store/home/user/" and create your file in the new directory.

2. Try create your file with just the file name: "FileConnection)Connector.open(file_name.txt);"

3. Try using a parameter in the open function: "FileConnection)Connector.open(file_name.txt,Connector.READ_WRITE);"

E.

[alishaik786]

You are checking file exist or not. And if not exists then you are creating a Directory not a file.

try
{
	FileConnection fc=(FileConnection)Connector.open(PATH);        	
	 if(fc.exists())
          		fc.truncate(0);
 	else
         		 fc.create();//here you are creating a directory instead or file.
	//Write what ever you want;
 	fc.close();
}

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[avi_yach · Accepted solution]

@all : after long slogging I realised that application not having permission to access Files can be a reason for this error. This can be avoided by (BlackBerry 9550)settings>Application>menu>edit default permission>connections>allow

any other alternative is also welcomed