Java Development

[nikita18]

Hello everyone,

I have an app where I create an image file, upload it and then delete it. The first two work fine but when I try to delete the file, it shows an Exception that the File is currently in use. How can I delete this file. Can somebody help.

Thanks you.

[nikita18]

Here is my code:

try{
		FileConnection f=null;
			 OutputStream out=null;
			 filename=getCurrDateTime();	  
			   
					f=(FileConnection) Connector.open("file:///store/home/user/_"+filename+".jpg",Connector.READ_WRITE);			
 					f.create();
					
					out=f.openOutputStream();			
					out.write(getBytes());    
			    	out.close();	   	
			    	
			    StringBuffer connectionStr=new StringBuffer("http://www.myserver.com/bb/upload.php);		 
				connectionStr.append(getString());	
					
				//upload image	
				sendImg(connectionStr.toString());	
					
				//delete file	
				f.delete();
				f.close();
				} catch (Exception e) {
					// TODO Auto-generated catch block
					System.out.println("====Exception: "+e.getMessage());
				}

[simon_hain]

maybe you should wait a bit until you try to delete the file.

[nikita18]

And how should I do that? When should I start deleting the file, till what time should I wait? 

[nikita18]

Now what I have done is, on the powerOff() event, I deleted the images I created. But I guess this is not an efficient method but it works. Can anybody suggest a better method? 

[simon_hain]

poweroff may never be called, depending on the habits of the user.
my guess would be that a wait of 500ms or something would be more than enough, but thats just fishing in the dark.

[nikita18]

Thanks for your reply, Simon. Yup I did it before. But I would like a method that could give me some sort of confirmation in this case.