Main.java Source code

Java tutorial

Introduction

Here is the source code for Main.java

Source

import java.awt.BorderLayout;

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

public class Main {
    JFrame testFrame = new JFrame();
    JTextArea firstTextArea, secondTextArea;
    JButton copyTextButton;

    public Main() {
        JPanel textPanel = new JPanel();
        textPanel.setLayout(new BoxLayout(textPanel, BoxLayout.PAGE_AXIS));

        firstTextArea = new JTextArea(10, 50);
        secondTextArea = new JTextArea(10, 50);

        textPanel.add(new JScrollPane(firstTextArea));
        textPanel.add(new JScrollPane(secondTextArea));

        testFrame.add(textPanel, BorderLayout.CENTER);

        copyTextButton = new JButton("Copy text");
        copyTextButton.addActionListener(e -> copyText());
        testFrame.add(copyTextButton, BorderLayout.SOUTH);
    }

    public JFrame getFrame() {
        return testFrame;
    }

    private void copyText() {
        secondTextArea.setText(firstTextArea.getText());
    }

    public static void main(String[] args) {
        JFrame frame = new Main().getFrame();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.pack();
        frame.setVisible(true);
    }
}