How do i dynamically add data to a JTabel?

Question

Hey
How do i add the data to a JTabel dynamically from a HashMap?
I tried the following:
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package test;
import java.util.HashMap;
import java.util.ArrayList;
import java.util.Set;
import javax.swing.JTable;
* @author Jesper
public class Players {
    HashMap<String, Stats> players;
    public Players(){
        players = new HashMap<String, Stats>();
        addPlayer();
    public void addPlayer(){
        players.put("Martin ?rnskov", new Stats(19, 3, 1));
        players.put("Thomas Raun", new Stats(23, 6, 0));
        players.put("Jimmy Mayasi", new Stats(26, 26, 3));
        players.put("Lasse J?rgensen", new Stats(33, 0, 0));
    public JTable showPlayers(){
        String[] columnames = {"Spiller", "Kampe", "M?l", "R?de kort"};
        Object[][] data;
        Set<String> key = players.keySet();
        for(String player : key){
           data = {{player, players.get(player).getMatches(), players.get(player).getGoals(), players.get(player).getRedCards()}};          
        final JTable table = new JTable(data, columnames);
        return table;
but on this line Netbeans says that variable is allready defined:
   data = {{player, players.get(player).getMatches(), players.get(player).getGoals(), players.get(player).getRedCards()}};          
I can see the problem is this, but when it cant be done this way, how can i do it then?

Answer 1

Instead of creating the table directly with data values, use a DefaultTableModel whose constructor is very similar. But DefaultTableModel has interesting method as addRow, removeRow... for dynamically handling data (and visually to table).
Set<String> keys = players.keySet();
Object[][] data = new Object[keys.size()][columNames.length];
for(i=0; i<keys.size(); i++) {
   String key = keys.next();
   data[0] = player;
data[i][[1] = players.get(player).getMatches();
data[i][[2] = players.get(player).getGoals();
data[i][[3] = players.get(player).getRedCards();
DefaultTableModel model = new DefaultTableModel(data, columNames );
JTable table = new JTable(model);
Later in your code, as you want to dynamically update the table, work with the model instead of the table to add , remove, change cell values of the table.
+PS : your code loop is probably wrong. You are setting data variable for each value of the set. I suppose you want to add a row to data array. data is a two dimension array+