Set textArea of a JFrame to data from a file?

Question

As the question states, I have a text file. Inside that text file is a few lines of text, and I want to populate my textArea with that data when the JFrame launches.

 public static void main(String args[]) throws IOException {

    FileReader reader = new FileReader("C:/filepathchangedforStackOverflow");
    BufferedReader br = new BufferedReader(reader);
    resultBox.read( br, null );
    br.close();

      java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new RemoteDesktop().setVisible(true);

            }
        });
    }

The error is on resultBox.read( br, null ); as it is saying that non-static variable resultBox cannot be referenced from a static context.

I have looked everywhere and am not finding anything. It seems simple enough, I don't know why it's not working.

Answer 1

Try this:

class Main

{

static JFrame frame=new JFrame(); 
static JPanel panel=new JPanel();
private static void display(JFrame frame) throws IOException 
    {
        JFileChooser chooser = new JFileChooser();
        int returnVal = chooser.showOpenDialog(null); 
        File file = null;
        if(returnVal == JFileChooser.APPROVE_OPTION)     
        file = chooser.getSelectedFile();    
        JTextArea text = new JTextArea();
        BufferedReader in = new BufferedReader(new FileReader(file));
        String line = in.readLine();
        while(line != null)
            {
                text.append(line + "\n");
                line = in.readLine();
            }
        panel.add(text);
        frame.add(panel);
    }
public static void main(String args[]) throws IOException
{
    frame. setTitle("Simple example");
    frame.setSize(500, 500);
    display(frame);
    frame.setVisible(true);
}

}