Pik

import javax.swing.*;
import javax.swing.border.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
public class CarsFrame extends JFrame implements ActionListener {

	private JPanel p1, p2;
	private JLabel l1, l2;
	private JTextField field1, field2;
	private JTextArea area;
	private JScrollPane scroll;
	private JButton add, clear;
	private ArrayList<Car> car;
	private JButton list;

	public CarsFrame() {
		super("Автомобили");
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		Container container = this.getContentPane();
		p1 = new JPanel();
		p1.setLayout(new GridLayout(2,2));
		p1.setBorder(new TitledBorder(new EtchedBorder(), "Автомобил"));
		l1 = new JLabel("Име на модел");
		p1.add(l1);
		field1 = new JTextField(10);
		field1.addActionListener(this);
		p1.add(field1);
		l2 = new JLabel("Максимална скорост");
		p1.add(l2);
		field2 = new JTextField(10);
		p1.add(field2);
		container.add(p1, BorderLayout.PAGE_START);
		area = new JTextArea(5, 10);
		scroll = new JScrollPane(area,
		JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
		JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
		container.add(scroll, BorderLayout.CENTER);
		p2 = new JPanel();
		add = new JButton("Добави");
		add.addActionListener(this);
		p2.add(add);
		clear = new JButton("Изчисти");
		clear.addActionListener(this);
		p2.add(clear);
		list = new JButton("Списък");
		list.addActionListener(this);
		p2.add(list);
		container.add(p2, BorderLayout.PAGE_END);
		car = new ArrayList<Car>();
		this.setSize(300, 250);
		this.setVisible(true);
		}

	public void actionPerformed(ActionEvent e) {
		Object source = e.getSource();
		if (source == add) {
			try {
				Car newCar = new Car(field1.getText(), Double.parseDouble(field2.getText()));
				car.add(newCar);
				area.setText("");
				area.append("Добавен автомобил\n"+ newCar.toString()+"\n");
			}
			catch(NumberFormatException ex) {
				area.setText("");
				area.append("Грешка при въвеждане на данните!\n");
				}
		}
		else if(source == clear) {
			field1.setText("");
			field2.setText("");
			area.setText("");
			}
		else if(source == field1) {
			String searchModel = field1.getText();
			boolean flag = false;
			area.setText("");
			area.append("Данни за "+ searchModel+"\n");
			for(Car c: car)
			if(c.getModel().equals(searchModel)) {
			flag = true;
			area.append(c.toString() + "\n");
			}
			if(!flag){

				area.setText("");

				area.append("Липсват данни за "+ searchModel+"\n");
				}
			else if(source == list) {
				area.setText("");
				area.append("Списък на автомобили\n");
				for(Car c: car)
				area.append(c.toString() + "\n");
				}
			}
		}
	public static void main(String[] args) {
		SwingUtilities.invokeLater(new Runnable() {
		public void run() {
		new CarsFrame();
		}
	});
	}
	}