sophomore public static final int junior /code for junior public static final int senior /code for senior /instance variablesconstructorsand method definitions go here indent statement blocks typically programmers indent each statement block by spacesin this book we typically use spaceshoweverto avoid having our code overrun the book' margins organize each class in the following order constants instance variables constructors methods we note that some java programmers prefer to put instance variable definitions last we put them earlier so that we can read each class sequentially and understand the data each method is working with use comments that add meaning to program and explain ambiguous or confusing constructs in-line comments are good for quick explanations and do not need to be sentences block comments are good for explaining the purpose of method and complex code sections testing and debugging testing is the process of experimentally checking the correctness of programwhile debugging is the process of tracking the execution of program and discovering the errors in it testing and debugging are often the most timeconsuming activity in the development of program testing