How To Lock and Unlock Folder Using Java

This code works on Window 7


First Select Folder Using JFileChooser to LOCK :

 JFileChooser chooser = new JFileChooser();  
 chooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);  
 chooser.showOpenDialog(this);  
 File f = chooser.getSelectedFile();  
 String path = f.getAbsolutePath();  
 fName = f.getName();  

Create bat file through program

 String cmd2 = "ren " + path + " " + fName + ".{ED7BA470-8E54-465E-825C-99712043E01C}";  
 File f2 = new File("lock.bat");  
 FileOutputStream fos2 = new FileOutputStream(f2);  
 DataOutputStream dos2 = new DataOutputStream(fos2);  
 dos2.writeBytes(cmd2);  
 fos2.close();  

Execute this bat file

 Runtime.getRuntime().exec("lock.bat");  

and to UNLOCK just change command cmd2 as

 String cmd2 = "ren "+ fName + ".{ED7BA470-8E54-465E-825C-99712043E01C} "+ folderPath;