private static String readUrl(String urlString) throws Exception {
    BufferedReader reader = null;
    try {
        URL url = new URL(urlString);
        reader = new BufferedReader(new InputStreamReader(url.openStream()));
        StringBuffer buffer = new StringBuffer();
        int read;
        char[] chars = new char[1024];
        while ((read = reader.read(chars)) != -1)
            buffer.append(chars, 0, read); 

        return buffer.toString();
    } finally {
        if (reader != null)
            reader.close();
    }
}
    public static class MySQLEntry {
    public String id;
    public static String ad;
    public String latitude;
    public String longitude;
    public String speed;
    public String hour;
    public String day;
    public String adres;
    public String resimyol;
    
  public String getId() { return id; }
  public static String getName() { return ad; }
  public String getlat() { return latitude; }
  public String getlon() { return longitude; }
  public String getspeed() { return speed; }
  public String gethour() { return hour; }
  public String getday() { return day; }
  public String getadres() { return adres; }
  public String getresim() { return resimyol; }
    
}
    
    public static void main(String args[]) {
        
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details seehttp://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException ex) {
            java.util.logging.Logger.getLogger(KonumGoster.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(KonumGoster.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(KonumGoster.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(KonumGoster.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>

        /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new KonumGoster().setVisible(true);
                
                 String json = null;
                try {
                    json = readUrl("http://url/"
                            + "json.php");
                } catch (Exception ex) {
                    Logger.getLogger(KonumGoster.class.getName()).log(Level.SEVERE, null, ex);
                }

    Gson gson = new Gson();     

       MySQLEntry[] array = gson.fromJson(json, MySQLEntry[].class);
for (MySQLEntry obj : array) {
//MySQLEntry x =new MySQLEntry(obj.getName());

jComboBox1.addItem(getName());

System.out.println("ID: " +obj.getId());
System.out.println("Ad: " +obj.getName());
System.out.println("Latitude: " +obj.getlat());
System.out.println("Longitude: " +obj.getlon());
System.out.println("Speed: " +obj.getspeed());
System.out.println("Saat: " +obj.gethour());
System.out.println("Tarih: " +obj.getday());
System.out.println("Açık Adres: " +obj.getadres());
System.out.println("Harita Üzerinde: " +obj.getresim());
}