30 lines
982 B
Java
30 lines
982 B
Java
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Creating a File Lock on a File
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public static void main(String[] args)
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{
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try {
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// Get a file channel for the file
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File file = new File("Test.java");
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FileChannel channel = new RandomAccessFile(file, "rw").getChannel();
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// Use the file channel to create a lock on the file.
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// This method blocks until it can retrieve the lock.
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FileLock lock = channel.lock();
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// Try acquiring the lock without blocking. This method returns
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// null or throws an exception if the file is already locked.
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try {
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lock = channel.tryLock();
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} catch (OverlappingFileLockException e) {
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// File is already locked in this thread or virtual machine
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}
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// Release the lock
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lock.release();
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// Close the file
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channel.close();
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} catch (Exception e) {
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}
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}
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