24 lines
590 B
Java
24 lines
590 B
Java
|
//: io/FileLocking.java
|
|||
|
|
// <20>2015 MindView LLC: see Copyright.txt
|
|||
|
|
import java.nio.channels.*;
|
|||
|
|
import java.util.concurrent.*;
|
|||
|
|
import java.io.*;
|
|||
|
|
|
|||
|
|
public class FileLocking {
|
|||
|
|
public static void main(String[] args) throws Exception {
|
|||
|
|
try(FileOutputStream fos =
|
|||
|
|
new FileOutputStream("file.txt")) {
|
|||
|
|
FileLock fl = fos.getChannel().tryLock();
|
|||
|
|
if(fl != null) {
|
|||
|
|
System.out.println("Locked File");
|
|||
|
|
TimeUnit.MILLISECONDS.sleep(100);
|
|||
|
|
fl.release();
|
|||
|
|
System.out.println("Released Lock");
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
} /* Output:
|
|||
|
|
Locked File
|
|||
|
|
Released Lock
|
|||
|
|
*///:~
|