QuadraticEquation Program plan: Import required packages. Define a class “Exercise09_10” Declare the main class named “Main”. Give the main method “public static void main ()”. Prompt the user to get the inputs for the data members. Create an object “equation”. Print the statement “equation has no roots” if discriminant value is less than 0. Print the result if value of discriminant is equal to 0 by calling the method “getRoot1()”. Print the results if value of discriminant is greater than or equal to 0 by calling the methods “getRoot1()” and “getRoot2()”. Define a class “QuadraticEquation” Declare the data members and parameterized constructor. Define a method to get the value of “a”. Define a method to get the value of “b”. Define a method to get the value of “c” Define a method to get the value of discriminant. Define methods to get the roots.

Question

(The Time class) Design a class named Time. The class contains: - The data fields hour, minute, and second that represent a time. - A no-arg constructor that creates a Time object for the current time. (The values of the data fields will represent the current time.) -A constructor that constructs a Time object with a specified elapsed time since midnight, January 1, 1970, in milliseconds. (The values of the data fields will represent this time.) -A constructor that constructs a Time object with the specified hour, minute, and second. - Three getter methods for the data fields hour, minute, and second, respectively. -A method named setTime (long elapseTime) that sets a new time for the object using the elapsed time. For example, if the elapsed time is 555550000 milliseconds, the hour is 10, the minute is 19, and the second is 10. Draw the UML diagram for the class and then implement the class. Write a test program that creates two Time objects (using new Time (), new Time(555550000),…

Answer 1

Question

Chapter 9, Problem 9.10PE

Program Plan Intro

QuadraticEquation

Program plan:

Import required packages.

Define a class “Exercise09_10”

Declare the main class named “Main”.

Give the main method “public static void main ()”.

Prompt the user to get the inputs for the data members.

Create an object “equation”.

Print the statement “equation has no roots” if discriminant value is less than 0.

Print the result if value of discriminant is equal to 0 by calling the method “getRoot1()”.

Print the results if value of discriminant is greater than or equal to 0 by calling the methods “getRoot1()” and “getRoot2()”.

Define a class “QuadraticEquation”

Declare the data members and parameterized constructor.

Define a method to get the value of “a”.

Define a method to get the value of “b”.

Define a method to get the value of “c”

Define a method to get the value of discriminant.

Define methods to get the roots.

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