Reference: Chapter 2 of the Swing Tutorial book
The assignment:
Make an enhanced version of the "Hello World" program with a "Quit"
button in addition to the "Hello World" label. I think this can
be most easily done by modifying the SwingApplication code for
Example 2 of Chapter 2. It can be downloaded from:
SwingApplication.java:
The interface should look something like this:
----------------- | | | Hello World! | | | | --------- | | | Quit | | | --------- | | | -----------------
Modification 1 -- Using HTML tags:
Make the color of the "Hello World!" text red using HTML tags.
Hint: see program Example 2 starting on page 22 (which is a bit
more complicated than what you need).
Modification 2 -- Order of the components:
Change the order of the components so that the label
(containing "Hello World!") is on top and the Quit
button is below it.
Modification 3 -- Making the Quit button work:
This can be done by replacing the body of the
actionPerformed()
function by
System.exit(0);
Modification 4 -- Making the Quit button work better:
Change the mnemonic to Q, so that pressing Alt-Q (i.e. holding down
the Alt key and pressing the q-key) also exits the program.
Hint: this is a minor change to the call to the
setMnemonic()
function.
Extra Challenge -- Switching the text colors:
It makes more sense to have the "Quit" text red in the Quit button
and having the label "Hello World!" remain black. But if you use
HTML to change the color of "Quit", Java can't "see" the Q to
underline it (which is the convention for mnemonics). However,
pressing Alt-Q will still work, so one way of fixing things is
to use HTML to also underline the letter Q (easy if you know HTML).
What to turn in:
Turn in the following items from the
Computer Science Lab Report Format:
1. (1 point) The Basic Information (your name, class, section,
TA's name, assignment number, and date) can be on a separate cover sheet or as
(highlighted) comments at the top of your main program file.
11. (4 points) Include the program listing.
This listing should show good style,
be appropriately commented, have the important parts
highlighted, and include handwritten explanations if it helps the
reader's understanding of the code.
13. (5 points) The most important part.
Do demos of your modified program for the TA that demonstrate that
the program works correctly.