Inventory Program Part6 Save Button

[AA54377]

Hi all,
I need help with the save button of my java inventory program part 6. It compiles and runs but then it get the error message stating C:\data\inventory.dat"(access denied) and then general output field shows:

at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)

here is the snippet of the program showing my save button

JButton saveButton = new JButton("Save");
       saveButton.setBounds(50, 60, 80, 30);
       saveButton.addActionListener(new ActionListener() {
           public void actionPerformed(ActionEvent event){
	      File dir = new File( "C:\\data\\" );
	       boolean isDirectoryCreated = dir.mkdir();
	       	if(isDirectoryCreated)
	       		 System.out.println("Directory created successfully");
	       		 	else
	       		 	{
	       		 	try
	      {
	         FileOutputStream out = new FileOutputStream( "Inventory.dat" );

	         try
	         {
	            ObjectOutputStream objectOut = new ObjectOutputStream(out);
	               Object inv = new Object();
				objectOut.writeObject( inv );
	         }

	         catch (IOException e)
	         {
	            JOptionPane.showMessageDialog( null, e.getMessage() );
	               e.printStackTrace();
	         }
	      }

	      catch ( FileNotFoundException e )
	      {
	         JOptionPane.showMessageDialog( null, e.getMessage() );
	            e.printStackTrace();
	      }

	   }
           }

       });

any help would be greatly appreciated