i cant check if confing date value and server date value same

hello i cant check if config date value and server date value same its give 0 error but its not working can you help me ?
here my check codes:

Config Code:

Code:

private File players = new File(getDataFolder(), "players.yml"); 
  public void saveDefaultConfig() {
        if (players == null) {
            players = new File(getDataFolder(), "players.yml");
        }
        if (!players.exists()) {           
             this.saveResource("players.yml", false);
         }
    }
  public FileConfiguration playersdata = YamlConfiguration.loadConfiguration(players);

Check Code:

Code:

 SimpleDateFormat format = new SimpleDateFormat("dd.MM.yyyy");
                  String t1  = format.format(now);
                  String t2  = playersdata.getString(p.getUniqueId()+".Date");
              System.out.println(t2 ==  t1);
            if(t2 ==  t1){

Config:

Code:

837c0579-f2e7-33b1-8682-5e7f8c0c8d23:
  Date: 28.06.2016
  ipaddress: 127.0.0.1
  PlayerName: djyee

i am sorry for my bad English i am still learning English and java

 

@djyee
Probably this.