Update the Checkerboard class of Assignment 5 to get a new class A7Checkerboard, with behavior as described below. You may use my solution to Assignment 5 as a basis if you want, but the changes you will need to make are fairly significant.

The A7Checkerboard class should behave like the A7Checkerboard class, except that

• Numeric red, green, or blue values that do not lie within the range from 0.0 through 1.0 should be rejected. Users who enter such illegal values should be reprompted to enter correct values. You needn't worry about rejecting nonnumeric values provided by the user.

• Collections of (red, green, blue) values all of which lie in the interval between 0.4 and 0.6 should be rejected (for providing insufficiently contrasting colors).

• The draw method should use one or more loops to draw the checkerboard.

• You should use proper Javadoc documentation (as well as appropriate documentation of implementation details). Proper Javadoc documentation includes at a minimum the use of the @param and @return tags, as well as documentation of the interface (but not the implementation) associated with each public method and public class, including error handling. It's not a bad idea to use the Javadoc discipline even for private methods and classes.

For this assignment, you should provide a copy of your code on diskette (no CD or email), and hard copies of your code. You needn't try to provide hard copies of the results of your testing. However your code should work with the A7CheckerboardApplet.java , which is provided on the class web site. You may use the A7CheckerboardApplet.html file, which is also provided on the web site, for your testing, but note that you will need to modify this file so that it refers to the location of your applet class on your machine.