MainClass.java Source code

Introduction

Here is the source code for MainClass.java

Source

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;

public class MainClass extends JPanel implements ActionListener {
    JTextField jtf = new JTextField(15);

    public MainClass() {

        add(jtf);
        jtf.addActionListener(this);
    }

    // Show text when user presses ENTER. 
    public void actionPerformed(ActionEvent ae) {
        System.out.println(jtf.getText());
    }

    public static void main(String[] args) {
        JFrame frame = new JFrame();
        frame.getContentPane().add(new MainClass());

        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(200, 200);
        frame.setVisible(true);
    }

}