将文本文件读入数组并通过GUI显示

Question

我无法让我的代码正常工作。我试图从input.txt文件中读取，但我不确定我做错了什么。我需要从输入文件中获取列出的项目并通过GUI显示它们。我也意识到我已经导入了很多不必要的软件包，但是我一直在做很多试验和错误来试图解决这个问题。

import java.awt.event.ActionEvent; //Next group of lines import various Java classes
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JCheckBox;
import javax.swing.JPanel;
import javax.swing.JTextField;
import java.awt.GridLayout;
import java.text.*;
import java.io.IOException;
import java.io.FileInputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;

public class ReadTextFile extends JFrame
   {
public static void main(String[] args) throws IOException {
    //Creates Window
    final JFrame frame = new JFrame();
    frame.setSize(450, 300); //Sets size of the window
    frame.setTitle("Read a Text File"); //Adds title to the GUI
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    //Create labels and fields
    JLabel Firstlbl = new JLabel("First Text Line");
    final JTextField FirstField = new JTextField(20);
    FirstField.setText("1st");
    JLabel Secondlbl = new JLabel("Second Text Line");
    final JTextField SecondField = new JTextField(20);
    SecondField.setText("2nd");
    JLabel Thirdlbl = new JLabel("Third Text Line");
    final JTextField ThirdField = new JTextField(20);
    ThirdField.setText("3rd");
    JLabel ButtonLabel = new JLabel("Click button to read text from file.");
    final JButton button = new JButton("Click Here");
    JPanel panel = new JPanel();
    panel.setLayout(new GridLayout(4,2));
    panel.add(ButtonLabel);
    panel.add(button);
    panel.add(Firstlbl);
    panel.add(FirstField);
    panel.add(Secondlbl);
    panel.add(SecondField);
    panel.add(Thirdlbl);
    panel.add(ThirdField);
    frame.add(panel);
    class CalculateListener implements ActionListener {

        public void actionPerformed(ActionEvent event) {
            String file_name = "/Users/diallodickerson/Documents/PRG 421/input.txt";
            try {
                ReadFile file = new ReadFile(file_name);
                String[] arraylines = file.OpenFile();
                int i;
                for (i=0; i < arraylines.length; i++) {
                    System.out.println(arraylines[i]);
                }
            }
            catch (IOException e) {
                System.out.println( e.getMessage() );
            }
        }
    }
    ActionListener listener = new CalculateListener();
    button.addActionListener(listener);

    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setVisible(true);
}

}