PROBLEM PROMPT $-$ Music Library

For this assignment you will implement a music library for organizing songs. This program must include a GUI that roughly looks like this:

Music Library must provide the following features:

$-$Add new song: To add a new song:

$1.$ Click the "New Song" button, at which point all of the input fields clear

$2.$ Enter the following fields:

$1.$ Title

$-$Required field

$-$Cannot be blank

$-$Must be unique $--$ there must not exist another song with this title

$2.$ Artist

$-$Required field

$-$Cannot be blank

$3.$ Share with $($which groups of people you want to share this song with$)$

$-$Check boxes: Friends, Family, Coworkers

$-$ Any number of check boxes can be checked $($including $0)$

$4.$ Category

$-$Drop$-$down list of choices: Work, Exercise, Party, Sleep, Driving, Other

$-$Work is the default selection in this list

$5.$ Running Time

$-0\mathrm{.}0$ is the default text in this field

$-$ Input must be a valid double number

$6.$ Notes

$-$Optional field, can be left blank

$-$Scrollable text area

$3.$ Click the "Save Song" button

$1.$ If any of the input is invalid, a warning dialog pops up$,$ stating, "Invalid input!"

$2.$ If all input is valid, a dialog pops up$,$ stating, "Song saved!" The new song then appears in the list on the left, and it is selected.

$-$View songs: To view an existing song, click on the name in the list, and that song's info will show up on the right.

$-$Edit song: To edit an existing song's info:

$1.$ Select the song in the list

$2.$ Edit any info in the field on the right

$3.$ Click the "Save Song" button

$1.$ If any of the input is invalid, a warning dialog pops up$,$ stating, "Invalid input!"

$-$Take care of the case in which the user attempts to change an existing song's title to one that already exists in the list. This should not be allowed.

$2.$ If all input is valid, a dialog pops up$,$ stating, "Song saved!"

$-$Delete song: To delete a song:

$1.$ Select the song in the list

$2.$ Click the "Delete" button

$-$Total running time: The total running time of the whole music library song list must be displayed under the song list and updated any time a song is added, edited, or deleted.

Requirements$/$Details:

$-$Your GUI layout can vary slightly from the one shown above, but should follow the same basic pattern, and should have components nicely aligned and spaced out.

$-$Your name and student id must be in the title of your window, like the screenshot above.

$-$The song list $($on the left$)$ must always be sorted in alphabetical order by title $($use the lexicographic ordering used by Java to order strings$).$

$-$Clicking on the Delete button when no song is selected will just do nothing. Clicking on the New Song button when the form is already cleared will just do nothing. Clicking on Save Song when no info has been changed will still pop up the "Song Saved" dialog. $($Although all this is bad UI$/$UX practice, it's fine for simplification purposes for this lab.$)$

$-$The only required class that you must have is MusicLibrary $($with a main method$).$ Any other classes are entirely up to you, but make sure you include them in your submission.

Hints:

$-$Use a JList for the song list on the left

$-$Use JOptionPane for showing dialogs