Microsoft
Software
Hardware
Network
Question : FileInputStream check if a file is in use
I tried to open a file that's being downloaded using FileInputStream. But it gives me the following errors:
java.io.FileNotFoundExcept
ion: C:\\tmp\jre-7-ea-bin-b93-w
indows-i58
6-13_may_2
010.jar (The process cannot access the file because it is being used by another process)
at java.io.FileInputStream.op
en(Native Method)
at java.io.FileInputStream.<i
nit>(FileI
nputStream
.java:137)
at java.io.FileInputStream.<i
nit>(FileI
nputStream
.java:96)
...
I did try to use File file = new File(NewFile);
and put if (file.canRead()) before I use the FileInputStream. But teh canRead( ) returns true while the FileInputStream failed with above exception.
How can I check if the FileInputStream will work?
Thanks!
Answer : FileInputStream check if a file is in use
when different processes access the file, i think you can use
FileChannel.lock()/FileCha
nnel.tryLo
ck(),
this will obtain a exclusive lock on the File for the JVM process, so other process (download) cannot access it and the other way around.
Random Solutions
Mofify the query
Connect Catalyst switch 2950 to a fiber optic line
Fujitsu Scan and Snap - Error Message
SQL Server Update Statement
how to create a count that starts at 001?
PIX 515E upgrade 6.35 To 7.24
Change to work hour
How to have the DHCP exclude affect DHCP scope in VRF?
batch file or script that emails when finding "error" in file
Custom Webresponse