Java FileChannel.tryLock()
Syntax
FileChannel.tryLock() has the following syntax.
public final FileLock tryLock() throws IOException
Example
In the following code shows how to use FileChannel.tryLock() method.
import java.io.FileOutputStream;
import java.nio.channels.FileLock;
/*w w w. ja va 2s . c om*/
public class Main {
public static void main(String[] args) throws Exception {
FileOutputStream fos = new FileOutputStream("file.txt");
FileLock fl = fos.getChannel().tryLock();
if (fl != null) {
System.out.println("Locked File");
Thread.sleep(100);
fl.release();
System.out.println("Released Lock");
}
fos.close();
}
}
The code above generates the following result.
