public Track(File soundFile)

public Player()
{
    playList = new PlayList("audio");
    track = new Track();
}

The syntax of an operation to create a new object is new ClassName(parameter-list)

How do I put (File soundFile) as the parameters in new Track()?

Yeah you are totally right. I am taking an introductory to Software Development course and I haven't understood it as well as I wanted too.. Are you willing to help out? You are right. Instead of giving me the answers, I need pointers so I can figure things out for myself... Where do I start?

    I know how to write fields, contructors, methods(get and set), local variables,if/else statements, abstractions and modularization. Learning how to use a class name as a type for a variable right now. We are using a textbook called Objects First with Java using BlueJ written by Michael Kolling.. The thing is I  think I understand the material but when I have an assignment to do something I can't understand what it's asking me to do... 

right now I am getting a high 75% in the course but I feel like I am not totally understand what I am doing... I know the more I practice the better I'll understand... I just can't understand what the question is asking me and how to go about it...

we are more then half way finished the course and I don't have a good unerstanding of our material. I can pass the course but how do I move to the next course without understanding what I am being taught right now. i will definately fail.. I don't care about the grades. I just want to be confident with what I am being taught.

I feel bad for trying to get answers from strangers and taking the easy way out... I don't want that. I want to learn. Do you have any suggestions?

public class Player
{
    private PlayList playList;
    private Track    track;



    /**
     * Constructor ...
     */
    public Player()
    {
        playList = new PlayList("audio");
    }

       /**
     * Return the track collection currently loaded in this player.
     */
    public PlayList getPlayList()
    {
        return playList;
    }

    /**
     * 
     */
    public void play()
    {
        if(track != null) {
           track.play();
        }    
    }

    public void stop()
    {
        if(track != null) {
           track.stop();  
        }
    }

    /**
     * 
     */
    public void setTrack(int trackNumber)
    {

    }

    /**
     * 
     */
    public String getTrackName()
    {
        return track.getName();
    }

    /**
     * Return information about the currently selected track. The information
     * contains the track name and playing time, in the format
     *    track-name (playing time)
     * Return an empty string if no track is selected.
     */
    public String getTrackInfo()
    {
        if(track != null) {
           System.out.println(track.getName() + "(" + track.getDuration() + ")");
        }
        return " ";
    }
}    

Do I create a int field to assign in the setTrack method? My code compiles but I can not play any songs in the GUI class. Can someone go over my work? Thank you.

but the parameter is an int . I can't change the method details. shouldn't I use a local variable?

Ok I completed the setTrack method.

 public void setTrack(int trackNumber)
    { 
        Track pTrack;
        if(track != null) {
            pTrack = track;
            pTrack.stop();
        }
        track = playList.getTrack(trackNumber); 
        track.rewind();
    }

 I need help in this method, can someone help?

> /**
>      * Return information about the currently selected track. The information
>      * contains the track name and playing time, in the format
>      *    track-name (playing time)
>      * Return an empty string if no track is selected.
>      */
>     public String getTrackInfo()
      {

      }

 return track.getName()+ "(" + track.getDuration() + ")";

I know that'll return the name and playing time but if no track is selected I need to have an empty string. So how do I write this?

ok I solved that as well ..

I need help with ...

Challenge tasks
Implement three more methods:
• one method named getNumberOfTracksPlayed that returns the number of tracks that
have been played (i.e. that have been started) since the player was started. The return
value should be an int.
• one method named getTotalPlayedTrackLength that returns the total playing time of all
tracks that have been played (or, to be more precise: started to play. We don’t care
whether they were played completely). The result is an int.
• one method named averageTrackLength that returns the average length of the tracks
played. The result is of type double.

public int getNumberOfTracksPlayed()
{
}

public int getTotalPlayedTrackLength()
{
}

public double averageTrackLength()
{
}