Writing and reading data from a form

Question

I am trying to write a save and load feature for an application using mostly Jtextboxes and things. Basically I have a form that the user enters data into. I want to be able to save this data and load this data. I am relatively new to working on a GUI and I'm not quite sure if my knowledge of I/O applies to this. This is my stab at it but if I am completely off I would not be surprised. I don't want to print it to the command line but this was all I could think of right now. Any help would be greatly appreciated.     
private void SavePrefs() {
          File SavePrefs;
          // get filename:
          fc.setDialogTitle("Select Filename For Site Data");
          int result = fc.showOpenDialog(f);
          if (result == JOptionPane.OK_OPTION) {
               SavePrefs = fc.getSelectedFile();
               // default file extension ".CMM"
               if (!SavePrefs.getName().endsWith(".CMM")) {
                    // filename does not meet requirmeents:
                    System.out.println("NO CMIMS in filename");
                    SavePrefs = new File(SavePrefs.getAbsolutePath() + ".CMM");
               // continue with save code:
               System.out.println("File Selected:" + SavePrefs.toString());
               //Creates a .cmm file with a code in it containing the data from the first site tab.
               FileOutputStream out; // declare a file output object
PrintStream p; // declare a print stream object
               try
// Create a new file output stream
out = new FileOutputStream(SavePrefs.toString());
// Connect print stream to the output stream
p = new PrintStream( out );
p.print(_SitePropPanel);
p.close();
catch (Exception e)
System.err.println ("Error writing to file");
               JOptionPane.showMessageDialog(null,
                         "File is saved.");
          // not OK selected (cancel or.?)
     private void LoadPrefs() {
          File loadPrefs;
          // get filename:
          fc.setDialogTitle("Select Filename For Site Data");
          int result = fc.showOpenDialog(f);
          if (result == JOptionPane.OK_OPTION) {
               loadPrefs = fc.getSelectedFile();
               // default file extension ".CMM"
               if (!loadPrefs.getName().endsWith(".CMM")) {
                    // filename does not meet requirements:
                    System.out.println("NO CMIMS in filename");
               // continue with save code:
               System.out.println("File Selected:" + loadPrefs.toString());
               try
     // Open the file that is the first
     // command line parameter
     FileInputStream fstream = new
                              FileInputStream(loadPrefs.toString());
     // Convert our input stream to a
     // DataInputStream
                         DataInputStream in =
     new DataInputStream(fstream);
     // Continue to read lines while
     // there are still some left to read
     while (in.available() !=0)
     // Print file line to screen
                              System.out.println (in.readLine());
                         in.close();
     catch (Exception e)
                         System.err.println("File input error");
          JOptionPane.showMessageDialog(null, "Feature is not yet implemented.");
     }

Answer 1

Oh and the GUI is a window with menus where the save feature resides, but the data is in tabbed panels. That is where the _SitePropPanel comes in. I know I want it to write the input from the panel and not the panel. What would would I use for that? I tried getInputContext().