Reference no: EM13166900
Implement a superclass Person. Make two classes, Student and Instructor, that inherit from Person. A person has a name and a year of birth. A student has a major, and an instructor has a salary. Write the class declarations, the constructors, and the methods toString for all classes. Supply a test program that tests these classes and methods.
Make a class Employee with a name and salary. Make a class Manager inherit from Employee. Add an instance variable, named department, of type String. Supply a method toString that prints the manager's name, department, and salary. Make a class Execu tive inherit from Manager. Supply appropriate toString methods for all classes. Supply a test program that tests these classes and methods.
A labeled point has x- and y-coordinates and a string label. Provide a class Labeled Point with a constructor LabeledPoint(int x, int y, String label) and a toString method that displays x, y, and the label.
Reimplement the LabeledPoint class of Exercise P9.12 by storing the location in a java.awt.Point object. Your toString method should invoke the toString method of the Point class.
|
Application that simulates a cash register
: Implement a graphical application that simulates a cash register. Provide a text field for the item price and two buttons for adding the item to the sale, one for taxable items and one for nontaxable items. In a text area, display the register tap..
|
|
Graphics program that draws 12 strings
: Write a graphics program that draws 12 strings, one each for the 12 standard colors, besides Color.WHITE, each in its own color. Provide a class ColorNameViewer and a class ColorNameComponent.
|
|
Graphical application for computing statistics
: Write a graphical application for computing statistics of a data set. Supply a text field and button for adding floating-point values, and display the current minimum, maximum, and average in a label.
|
|
Returns the object with the largest measure
: public static Measurable maximum(Measurable[] objects)that returns the object with the largest measure. Use that method to determine the country with the largest area from an array of
|
|
Reimplement the labeledpoint class of exercise
: Reimplement the LabeledPoint class of Exercise P9.12 by storing the location in a java.awt.Point object. Your toString method should invoke the toString method of the Point class.
|
|
Question hierarchy of section
: Add a class AnyCorrectChoiceQuestion to the question hierarchy of Section 9.1 that allows multiple correct choices. The respondent should provide any one of the cor- rect choices. The answer string should contain all of the correct choices, separa..
|
|
In competitive tournament
: In competitive tournaments, it is common for all the players or teams to play in a series of matches in order to determine a single winner of the entire tournament. However, a number of different tournament formats exist. Here, we will concern our..
|
|
What is the density of the metal
: A piece of metal with a mass of 146 g is placed in a 50 mL graduated cylinder. The water level rises from 20. mL to 35 mL. What is the density of the metal?
|
|
What is the molality of x in the solution
: A 0.300-M solution of X (Mm = 171 g/mol) has a density of 1.096 g/ml. What is the molality of X in the solution?
|