USING JAVA

Pick a topic that you would like to turn into a java class. Must have the following:

• 3 instance variables of different types
• Provide all appropriate accessors (getters) and mutators (setters)
• Your mutators should provide checks if relevant.
• Provide a read input method. (Try writing a precondition and postcondition comment).
• Provide a write output method. (Try writing a precondition and postcondition comment).
• Provide a demo class with a main method that calls all methods.