CODEWITHSUNDEEP
javafile-uploadprocessupload
Abhilash Muthuraj
Abhilash Muthuraj

Reputation: 2028

Check when a process finishes in java?

How to check when a particular process has been finished? In my scenario download, process, upload is happening sequentially.

Below is what I'm trying to accomplish -

1) Downloading an excel file from a server (Size varies - which is the reason I'm trying to check time)

call S3DataGetUrlForDownload( parameters )

2) Process the excel file inside java servlet, upload it to an API (which is different from the first server). 

upload.fileUpload( parameters );

Never programmed with the threads/timers. Added this part of sleep code, but when excel is big it fails. 

 try {
        Thread.sleep(2000);
 } catch(InterruptedException ex) {
        Thread.currentThread().interrupt();
 }

Upvotes: 0

Views: 82

Answers (2)

user207421
user207421

Reputation: 311023

If you're doing it in another thread, don't do it in another thread. Then 'process completion' basically becomes 'the called method returns'.

Upvotes: 1

kag0
kag0

Reputation: 6054

In the thread class there is a method named join that will block until that thread completes execution. Just call that for your download/worker thread (from main thread) and it will behave the same as if you called Thread.sleep with exactly the right time.

Upvotes: 0

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