Incompatible types?

package com.teamtreehouse.pomodoro.controllers;


import com.teamtreehouse.pomodoro.model.Attempt;
import com.teamtreehouse.pomodoro.model.AttemptKind;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.scene.control.Label;
import javafx.scene.layout.VBox;


public class Home {
    @FXML
    private VBox container;

    @FXML
    private Label title;

    private Attempt mCurrentAttempt;

    private void prepareAttempt(AttemptKind kind) {
        clearAttemptStyles();
        mCurrentAttempt = new Attempt(kind, "");
        addAttemptStyle(kind);
        title.setText(kind.getDisplayName());

    }

    private void addAttemptStyle(AttemptKind kind) {
        container.getStyleClass().add(kind.toString().toLowerCase());
    }

    private void clearAttemptStyles() {
        for (AttemptKind kind : AttemptKind.values()) {
            container.getStyleClass().remove(kind.toString().toLowerCase());
        }
    }

    public void DEBUG(ActionEvent actionEvent) {
        System.out.println("HI MOM");

    }
}

package com.teamtreehouse.pomodoro.model;


public enum AttemptKind {
    FOCUS(25 * 60, "Focus time"),
    BREAK(5 * 60, "Break time");

    private int mTotalSeconds;
    private String mDisplayName;


    AttemptKind(int totalSeconds, String displayName) {
        mTotalSeconds = totalSeconds;
        mDisplayName = displayName;
    }

    public int getTotalSeconds() {
        return mTotalSeconds;
    }

    public String getDisplayName() {
        return mDisplayName;
    }
}