Someone

import java.util.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
import java.util.*;

public class PlanetPanel extends JFrame implements ActionListener {
	public  static final int      ANTAL = 12;
	private Container container;
	private JComboBox box1;
	private JScrollPane scrollPane;
	private JPanel nPanel;
	private JPanel mPanel;
	private JPanel sPanel;
	private JPanel wPanel;
	private JLabel bild = new JLabel ("");
	private JLabel d = new JLabel ("Diameter");
	private JLabel o = new JLabel ("omloppstid");
	private JLabel infoLabel = new JLabel ("Planeterna i vårt solsystem");
	private JTextField diameter = new JTextField();
	private JTextField omloppstid = new JTextField();
	private Vector planetList = new Vector();
	
	
	
	public PlanetPanel() {
		this.skapaGUI();
		
	}
	
	public void skapaGUI() {

		container = getContentPane();
		setSize(655, 500);		

		/*box1.addItem("Merkurius");
		System.out.println("added item merkurius...");
		box1.addItem("Venus");
		box1.addItem("Tellus");
		box1.addItem("Mars");
		box1.addItem("Jupiter");
		box1.addItem("Saturnus");
		box1.addItem("Uranus");
		box1.addItem("Neptunus");
		box1.addItem("Pluto");*/
		String[] items = { "Merkurius", "Venus", "Tellus", "Mars", "Jupiter", "Saturnus", "Uranus", "Neptunus", "Pluto" };
		box1 = new JComboBox(items);
		box1.addActionListener(this);
		
		
		planetList.add(new Planet ("Merkurius", 4878, 0.24, Toolkit.getDefaultToolkit().getImage("Merkurius.gif")));
		planetList.add(new Planet ("Venus", 12104, 0.61, Toolkit.getDefaultToolkit().getImage("Venus.gif")));
		planetList.add(new Planet ("Tellus", 12756, 1.0, Toolkit.getDefaultToolkit().getImage("Tellus.gif")));
		planetList.add(new Planet ("Mars", 6794, 1.88, Toolkit.getDefaultToolkit().getImage("Mars.gif")));
		planetList.add(new Planet ("Jupiter", 142796, 11.86, Toolkit.getDefaultToolkit().getImage("Jupiter.gif")));
		planetList.add(new Planet ("Saturnus", 120000, 29.46, Toolkit.getDefaultToolkit().getImage("Saturnus.gif")));
		planetList.add(new Planet ("Uranus", 50800, 84.07, Toolkit.getDefaultToolkit().getImage("Uranus.gif")));
		planetList.add(new Planet ("Neptunus", 50450, 164.82, Toolkit.getDefaultToolkit().getImage("Neptunus.gif")));
		planetList.add(new Planet ("Pluto", 3400, 248.6, Toolkit.getDefaultToolkit().getImage("Pluto.gif")));
		System.out.println("planetList size: "+planetList.size());
				
			
		nPanel = new JPanel();
 		infoLabel.setOpaque(true);
		infoLabel.setForeground(Color.black);
		infoLabel.setBackground(Color.blue);
 
		nPanel.add(infoLabel);
		container.add(nPanel, BorderLayout.NORTH);
		
		wPanel = new JPanel();
		GridBagLayout m = new GridBagLayout();
		wPanel.setLayout(m);
		GridBagConstraints con = new GridBagConstraints();
		con.gridy=0;
		con.gridx=0;
		con.gridheight = 1;
		con.insets = new Insets(25, 5, 25, 5);
		m.setConstraints(box1, con);
 
		con.gridy=1;
		con.gridheight = 15;
 		
		con.gridy=17; 
		con.gridheight = 1;
		con.anchor = GridBagConstraints.CENTER;
		
		wPanel.setBackground(Color.white);
		wPanel.add(box1);

		container.add(wPanel, BorderLayout.WEST);
		
		
		scrollPane = new JScrollPane(bild);
		container.add(BorderLayout.CENTER, scrollPane);
		sPanel = new JPanel();
		sPanel.add(this.d); 
		sPanel.add(diameter);
		sPanel.add(o); sPanel.add(omloppstid);
		
		container.add(sPanel, BorderLayout.SOUTH);
		setVisible(true);
		 
		
	}
	
	public Planet getPlanet(String namn) {
		Planet planet = null;
		Iterator i = planetList.iterator();
	
		System.out.println("getPlanet called with arg: "+namn);
		if (! i.hasNext()) System.out.println("Iterator has no elements");
		while (i.hasNext()) {

			planet = (Planet) i.next();
			System.out.println("\""+namn+"\" - \""+planet.visaNamn()+"\"");
			if (planet.visaNamn().equalsIgnoreCase(namn)) {
				System.out.println("Found planet");
				break;
				
			}
		}
						
		return planet;
		
	}
			
		
	public void actionPerformed(ActionEvent e) {
		JComboBox cb = (JComboBox)e.getSource();
		if (cb.getSelectedItem() instanceof String) System.out.println("Item instanceof String");
		String planetName = (String)cb.getSelectedItem();
		System.out.println("PlanetName: "+planetName);
		Planet planet = getPlanet(planetName);
		int diameter = planet.visaDiameter();
		double year = planet.visaOmloppstid();
		Image bild = planet.visaImage();
		d.setText("Diameter: "+String.valueOf(diameter));
		o.setText("Omlopsstid: "+String.valueOf(year));
		
	}
	
	public static void main(String[] args) {
		PlanetPanel p = new PlanetPanel();
	}
}
        
    
class Planet extends JPanel {
	
	private int diameter;
	private double omloppstid;
	private Image bild;
	private String namn;
	
	
	public Planet (String n, int d, double o, Image b) {
		diameter = d;
		omloppstid = o;
		bild = b;
		namn = n;
	}
	
	public String visaNamn(){
		return namn;
		
	}
	
	public int visaDiameter(){
		return diameter;
		
	}
	
	public double visaOmloppstid(){
		return omloppstid;
	}
	
	public Image visaImage(){
		return bild;
	}
	
	
}