CODEWITHSUNDEEP
javaswingjfilechooser
alisong
alisong

Reputation: 1

Using JFileChooser? buttons & restricting file type

I am proficient in Java but I have never made a GUI before & am trying to learn them. I'm trying to program a basic GUI for a 20 questions game I wrote a while ago. The user has the option to upload memory for the game in the form of a .txt file, and I'm having a lot of difficulty finding info on the JFileChooser/getting it to work. I can't get any of the buttons to work, do I need to create actionPerfomeds for the fileChooser too? Also, how do I restrict it to ONLY .txt files? (game is the name of the 20 questions object I wrote earlier). 

JFileChooser fileChooser = new JFileChooser();
fileChooser.setPreferredSize(new Dimension(410, 250));
panel3.add(fileName, BorderLayout.NORTH);
panel3.add(fileChooser, BorderLayout.SOUTH);
frame.pack();
frame.validate();
frame.repaint();
Scanner scan = new Scanner(fileChooser.getName());
game.load(scan);

Upvotes: 0

Views: 49

Answers (1)

EvanM
EvanM

Reputation: 687

Your code doesn't wait for a user response. So, yeah, you need an actionPerformed method to check the output of the file chooser. See https://docs.oracle.com/javase/tutorial/uiswing/components/filechooser.html for how to use the file chooser. You need to capture the return value of a #showOpenDialog call and then call #getSelectedFile.

Scroll down on that same page for how to use a FileFilter to just get .txt files.

Upvotes: 1

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