Java Buttons does not work - user-interface

Question

I run into a problem, that I really don't know how to probably create a functional buttons in Java Swing GUI ( I guess this is how I should call it). I create a print statement to check whether if my buttons work or not,and it doesn't work.Here is my code.
import javax.swing.JFrame;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.BorderLayout;
import java.awt.FlowLayout;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import java.awt.*;
import java.awt.event.*;
/**
* Create a JFrame to hold our beautiful drawings.
*/
public class Jan1UI implements ActionListener
{
/**
* Creates a JFrame and adds our drawings
*
* #param args not used
*/
static JFrame frame = new JFrame();
static JButton nextBut = new JButton("NEXT");
static NextDayComponents nextDaycomponent = new NextDayComponents();
public static void main(String[] args)
{
//Set up the JFrame
nextBut.setBounds(860, 540, 100, 40);
/*nextBut.setOpaque(false);
nextBut.setContentAreaFilled(false);
nextBut.setBorderPainted(false);
*/
frame.setSize(1920, 1080);
frame.setTitle("Jan1UI demo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().setBackground(Color.WHITE);
frame.setVisible(true);
frame.add(nextBut);
frame.add(nextDaycomponent);
}
public void actionPerformed(ActionEvent e)
{
JButton b = (JButton)e.getSource();
if (b == nextBut)
{
System.out.println("ok");
}
}
}
/*static class Butt implements ActionListener
{
}*/

Answer 1

You need to add an action listener to the button, but cant do that in main as it is a static method. Instead, create a constructor to do thework similar to this:
public class Jan1UI implements ActionListener
{
public static void main(String[] args)
{
Jan1UI ui = new Jan1UI();
}
public Jan1UI ()
{
JFrame frame = new JFrame();
JButton nextBut = new JButton("NEXT");
nextBut.setBounds(860, 540, 100, 40);
nextBut.addActionListener(this);
frame.setSize(1920, 1080);
frame.setTitle("Jan1UI demo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().setBackground(Color.WHITE);
frame.setVisible(true);
frame.add(nextBut);
}
public void actionPerformed(ActionEvent e)
{
System.out.println("ok");
}
}

Answer 2

You must bound an ActionListener to the button:
nextBut.setBounds(860, 540, 100, 40);
nextBut.addActionListener(new Jan1UI());