Due
This
assignment gives you experience creating a Java program with a graphical user interface.
It builds upon the classes and methods you created for Assignment 3. If you
do not have a working version of Assignment 3, contact the TAs immediately to
get a copy of Assignment 3 you can use for this assignment.
1) Implement the program so it
runs as a Java applet. You can either provide an HTML file to launch your
applet or place the applet tag in a Java comment so you can run the Java file
in the applet viewer. This is your
choice, but your “readme.txt” file must make it clear which choice
you made.
2) The program must have a GUI
built with Swing components. It does not take any input from the console, and
it does not send any output to the console.
3) There must be a series of
buttons that the user can use to type in a FlexNumber. These would include
digits, left and right brackets, and plus and minus signs.
4) There must be a text field
that shows the number as the user types it.
5) There must be a Clear button
that clears the text field.
6) There must be a Backspace
button that deletes what the user typed, one character at a time, starting with
the last character typed.
7) There must be buttons to
convert the number currently in the text field into the various number
representations. That is, a button to convert to FlexDouble, a button to
convert to FlexComplex, and a button to convert to FlexLong.
8) The previous requirement
implies that you will need to write a method which can take a String and
produce a FlexNumber with the right type and value.
9) If the number being
converted is not correctly formatted (e.g. has two decimal points), an error
message should appear in the text field.
Remember
the following
·
Put each class in a separate source file.
·
Be sure to use correct and complete Javadoc.