Ontwerpen en programmeren, Absolute Java

package com.mycompany.radioaanvraag;



import javax.swing.*;

import java.awt.*;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.print.PrinterException;

import java.text.SimpleDateFormat;

import java.util.Date;



public class RadioAanvraag extends JFrame implements ActionListener

{

private final JTextField naamField;

private final JTextField rangField;

private final JTextField eenheidField;

private final JTextArea itemsArea;

private final JSpinner datumSpinner;

private JFrame inputFrame;



public RadioAanvraag()

{

JLabel naamLabel = new JLabel("Naam:");

JLabel rangLabel = new JLabel("Rang:");

JLabel eenheidLabel = new JLabel("Eenheid:");

JLabel datumLabel = new JLabel("Uitleen datum:");

JLabel itemsLabel = new JLabel("Items:");

SpinnerDateModel model = new SpinnerDateModel();



naamField = new JTextField(10);

rangField = new JTextField(10);

eenheidField = new JTextField(10);

,datumSpinner = new JSpinner(model);

itemsArea = new JTextArea(10, 10);



JButton toonGegevensButton = new JButton("Akkoord");

toonGegevensButton.setBackground(Color.green);

toonGegevensButton.addActionListener(this);



JPanel inputPanel = new JPanel(new GridLayout(8, 1));

JSpinner.DateEditor editor = new JSpinner.DateEditor(datumSpinner, "dd-MM-yyyy");

datumSpinner.setEditor(editor);



inputPanel.add(naamLabel);

inputPanel.add(naamField);

inputPanel.add(rangLabel);

inputPanel.add(rangField);

inputPanel.add(eenheidLabel);

inputPanel.add(eenheidField);

inputPanel.add(datumLabel);

inputPanel.add(datumSpinner);



JLabel bericht1Label = new JLabel("Houd rekening met het aantal radio's.");

bericht1Label.setForeground(Color.RED);

JLabel bericht2Label = new JLabel("");

JLabel bericht3Label = new JLabel("Maximaal 10x VHF.");

bericht3Label.setForeground(Color.RED);

JLabel bericht4Label = new JLabel("");

JLabel bericht5Label = new JLabel("Maximaal 4x HF");

bericht5Label.setForeground(Color.RED);



inputPanel.add(bericht1Label);

inputPanel.add(bericht2Label);

, inputPanel.add(bericht3Label);

inputPanel.add(bericht4Label);

inputPanel.add(bericht5Label);



JPanel itemsPanel = new JPanel(new BorderLayout());

itemsPanel.add(itemsLabel, BorderLayout.NORTH);

itemsPanel.add(new JScrollPane(itemsArea), BorderLayout.CENTER);



JPanel buttonPanel = new JPanel();

buttonPanel.add(toonGegevensButton);



JPanel panel = new JPanel(new BorderLayout());

panel.add(inputPanel, BorderLayout.NORTH);

panel.add(inputPanel, BorderLayout.NORTH);

panel.add(itemsPanel, BorderLayout.CENTER);

panel.add(buttonPanel, BorderLayout.SOUTH);



add(panel);



setTitle("Aanvraag formulier");

setSize(600, 600);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

setVisible(true);



}



@Override

public void actionPerformed(ActionEvent e) {

if (e.getActionCommand().equals("Akkoord")) {

String naam = naamField.getText();

String rang = rangField.getText();