View difference between Paste ID: VWwVkpbh and LdetDgSB

 import java.io.File;
 import java.io.FileNotFoundException;
 import java.io.FileOutputStream;
 import java.io.RandomAccessFile;
 import java.nio.channels.FileChannel;
 import java.nio.channels.FileLock;
 import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
 import java.util.Arrays;
 
 public class SomeClass {
   public static void main(final String[] args) throws Exception {
     final File file = File.createTempFile("SharedLockDemo", ".tmp");
     file.deleteOnExit();
     try (FileOutputStream fs = new FileOutputStream(file)) {
       fs.write("HELLO".getBytes(StandardCharsets.US_ASCII));
     }
 
     if (!file.exists())
       throw new FileNotFoundException();
     try (final RandomAccessFile raf = new RandomAccessFile(file, "r");
         FileChannel channel = raf.getChannel()) {
       // Must be shared, since we are only in read access mode.
       final FileLock lock = channel.lock(0, Long.MAX_VALUE, true);
       final long size = channel.size();
       System.out.println("Size: " + size); // should be |HELLO| = 5
 
       final String[] commands = new String[3];
       commands[0] = "CMD"; // CMD startet echten neuen Prozess
       commands[1] = "/C"; // Führt folgende Befehle aus:
       commands[2] = "ECHO BOGUS > \"" + file.getCanonicalPath()
           + "\" || EXIT 1"; // String Ausgabe
 
       System.out.println("Commands: " + Arrays.toString(commands));
       // Befehl ausführen:
       final Process process = Runtime.getRuntime().exec(commands);
       final int exitValue = process.waitFor();
       // I'd expect the value to be 1.
       System.out.println("Exit Value: " + exitValue);
 
       lock.release();
 
       System.out.println("Contents of file:");
       final byte[] contents = Files.readAllBytes(file.toPath());
       if (contents.length == 0)
         System.out.println("<EMPTY>");
       else
         System.out.println(new String(contents, StandardCharsets.US_ASCII));
     }
 
   }
 
 /* OUTPUT (Windows 7, Java 8):
 
 Size: 5
 Commands: [CMD, /C, ECHO BOGUS > "C:\Users\Claude\AppData\Local\Temp\SharedLockDemo4948636556524834177.tmp" || EXIT 1]
 Exit Value: 0
 Contents of file:
 <EMPTY>
 
 */
 
 }