Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.awt.BorderLayout;
import java.awt.Desktop;
import java.io.File;
import java.io.FileOutputStream;
import java.io.OutputStreamWriter;

import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;

public class Main {
    JTextArea textArea;
    JButton save;

    void initUI() {
        JFrame frame = new JFrame(Main.class.getSimpleName());
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        textArea = new JTextArea(24, 80);
        save = new JButton("Save to file");
        save.addActionListener(e -> saveToFile());
        frame.add(new JScrollPane(textArea));
        JPanel buttonPanel = new JPanel();
        buttonPanel.add(save);
        frame.add(buttonPanel, BorderLayout.SOUTH);
        frame.setSize(500, 400);
        frame.setVisible(true);
    }

    protected void saveToFile() {
        JFileChooser fileChooser = new JFileChooser();
        int retval = fileChooser.showSaveDialog(save);
        if (retval == JFileChooser.APPROVE_OPTION) {
            File file = fileChooser.getSelectedFile();
            if (file == null) {
                return;
            }
            if (!file.getName().toLowerCase().endsWith(".txt")) {
                file = new File(file.getParentFile(), file.getName() + ".txt");
            }
            try {
                textArea.write(new OutputStreamWriter(new FileOutputStream(file), "utf-8"));
                Desktop.getDesktop().open(file);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }

    public static void main(String[] args) {
        new Main().initUI();
    }
}