Create a class named Blanket with fields for a Blanket’s size, color, material, and price. Include a constructor that sets default values for the fields as Twin, white, cotton, and $30.00. Include a set method for each of the first three fields. The method that sets size adds $10 to the base price for a double blanket, $25 for a queen blanket, and $40 for a king. The method that sets the material adds $20 to the price for wool and $45 to the price for cashmere. In other words, the price for a king-sized cashmere blanket is $115. Whenever the size or material is invalid, reset the blanket to the default values. Include a toString() method that returns a description of the blanket. Save the file as Blanket.java.
Create a child class named ElectricBlanket that extends Blanket and includes two additional fields: one for the number of heat settings and one for whether the ElectricBlanket has an automatic shutoff feature. Default values are one heat setting and no automatic shutoff. Include get and set methods for the fields. Do not allow the number of settings to be fewer than one or more than five; if it is, use the default setting of 1. Add a $5.75 premium to the price if the blanket has the automatic shutoff feature. Also include a toString() method that calls the parent class toString() method and combines the returned value with data about the new fields to return a complete description of features. Save the file as ElectricBlanket.java.
Create an application that creates a Blanket and displays the starting values. Then, continually prompt the user for a Blanket material. Display the values, prompt the user for a size, and display the values again. Continue to get new material and size values until a sentinel value is entered. Then do the same for an ElectricBlanket, including allowing the user to change the number of settings and whether the ElectricBlanket has the automatic shutoff feature. Save the file as DemoBlankets.java.
Create an interface called Runner. The interface has an abstract method called run(). Save the file as Runner.java.
Create classes called Machine, Athlete, and PoliticalCandidate that all implement Runner. The run() method displays a message describing the meaning of run to each class. Save the files as Machine.java, Athlete.java, and PoliticalCandidate.java.
Create an application that prompts the user for the type of object to create. Create it, and display the message that describes run for the class. Save the file as DemoRunners.java.
Create a program with an enumeration that contains the names of the eight planets in our solar system. Prompt the user for a planet name and use the ordinal() method to display the planet’s position. Save the file as Planets.java.
Write a program that inserts parentheses, a space, and a dash into a String of 10 user-entered numbers to format it as a phone number. For example, 5153458912 becomes (515)345-8912. If the user does not enter exactly 10 digits, display an error message. Continue to accept user input until the user enters 999. Save the file as PhoneNumberFormat.java.
