File transfer problem

[Mahima Das]

Hi,
I am trying to copy files over the network using a java program.
I need to copy files at a certain point of time.
How do i handle whenever there is a network interruption.
I mean if only few files are copied, how do i revert the transaction & start a new file transfer process again.

Plz let me know incase if you know how to resolve this problem..

waiting for ur response

Thanks
Mahima das

[Nathaniel Stoddard]

It looks like you need to familiarize yourself with Java's use of exceptions as a program control construct. Check out the language specification, or possibly the Java tutorial.

[Vijayendra V Rao]

Hi Mahima,

When you connect to a network and carry out operations on that network connection object, there are very high chances of things going wrong with the connection. In your case, while you are transferring (or copying) files from the network, in case something goes wrong, you can catch the Exception and the probably delete all the copied files so far and then start over again by opening a new socket connection.

Although its always better to catch the particular exception object which your process might throw, if you are not sure which exception to catch, catch the super class object of all exception types, that is Exception, and then in that catch block do the start-over again.

Hope this helps