Open Folder to select file

As both of these answers found in SOen :

• link
• link

Adding JFileChooser

Apparently JFileChooser is not present by default, but you can add, follow the steps:

Selecting File Types

You will need the method getDescription and accept , eg:

JFileChooser fileChooser = new JFileChooser();

fileChooser.setFileFilter(new FileFilter()
{
   public String getDescription() {
       return "Audio Files (*.mp3)";
   }

   public boolean accept(File f) {
       if (f.isDirectory()) {
           return true;
       } else {
           String filename = f.getName().toLowerCase();
           return filename.endsWith(".mp3");
       }
   }
});

I have not yet tested the code, but it seems to work, please let me know if there is any problem.