<code>
package login;
import javax.swing.JOptionPane;


public class login {


public static void main(String[] args) {
String username;
String passadrien;


username = JOptionPane.showInputDialog(null, "Username :");
System.out.println(username);
if (username == "a"){
System.out.println("a");
passadrien = JOptionPane.showInputDialog(null, "Password :");

if (passadrien == "6pkz3be25pqdcvb") {

JOptionPane.showInputDialog(null, "Page d'accueil !");

}

}
else if (username == "test"){



}


}

}
<code/>

je ne comprens pas pourquoi ca ne marche pas ...