
Concept explainers
(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 then implement the class. Write a test
(Hint: The first two constructors will extract the hour, minute, and second from the elapsed time. For the no-arg constructor, the current time can be obtained using System.currentTimeMillis(), as shown in Listing 2.7, ShowCuncntTime.java. Assume the time is in GMT.)

Program to print the current time with required data fields
Program Plan:
- Define the required public class.
- Define the main function in the class using public static void main(String[] args).
- Create the object to the class and pass the arguments.
- Print the data field using System.out.println() .
- Close the main function.
- Define the main function in the class using public static void main(String[] args).
- Close the public class definition.
- Define the required class.
- Define the integers
- Declare the public function.
- Define the setter method.
- Pass the arguments to the public function.
- Define the getter method.
- Define the void function.
- Compute the data fields.
- Close the main function.
- Close the public class definition.
Program Description:
The following java program has the class named Time and shows the current time with the data fields hour, minute and second respectively.
Explanation of Solution
Program:
//Class definition
public class Time {
//Define main function
public static void main(String[] args) {
//Create object to the class and assign the arguments
MyTime time1 = new MyTime();
//Print the data field
System.out.println(time1.getHour() + ":" +
time1.getMinute() + ":" + time1.getSecond());
//Create object to the class and assign the arguments
MyTime time2 = new MyTime(555550000);
//Print the data field
System.out.println(time2.getHour() + ":" +
time2.getMinute() + ":" + time2.getSecond());
//Create object to the class and assign the arguments
MyTime time3 = new MyTime(5, 23, 55);
//Print the data field
System.out.println(time3.getHour() + ":" +
time3.getMinute() + ":" + time3.getSecond());
}
}
//Class definition
class MyTime {
//Define the integer
private int hour;
private int minute;
private int second;
//Declare public function
public MyTime() {
this(System.currentTimeMillis());
}
//Declare public method
public MyTime(long elapsedTime) {
//Define setter method
setTime(elapsedTime);
}
//Pass the arguments to the public function
public MyTime(int hour, int minute, int second) {
this.hour = hour;
this.minute = minute;
this.second = second;
}
//Define getter method
public int getHour() {
return hour;
}
//Define getter method
public int getMinute() {
return minute;
}
//Define getter method
public int getSecond() {
return second;
}
//Define void function
public void setTime(long elapsedTime) {
// Obtain the total seconds since the midnight, Jan 1, 1970
long totalSeconds = elapsedTime / 1000;
// Compute the current second in the minute in the hour
second = (int)(totalSeconds % 60);
// Obtain the total minutes
long totalMinutes = totalSeconds / 60;
// Compute the current minute in the hour
minute = (int)(totalMinutes % 60);
// Obtain the total hours
int totalHours = (int)(totalMinutes / 60);
// Compute the current hour
hour = (int)(totalHours % 24);
}
}
17:57:23
10:19:10
5:23:55
Want to see more full solutions like this?
Chapter 10 Solutions
Introduction to Java Programming and Data Structures, Comprehensive Version Plus MyProgrammingLab with Pearson EText -- Access Card Package
Additional Engineering Textbook Solutions
Management Information Systems: Managing The Digital Firm (16th Edition)
Starting Out with C++ from Control Structures to Objects (9th Edition)
Starting Out with Java: From Control Structures through Objects (7th Edition) (What's New in Computer Science)
Computer Science: An Overview (13th Edition) (What's New in Computer Science)
Introduction To Programming Using Visual Basic (11th Edition)
Database Concepts (8th Edition)
- Write the set of SQL commands necessary to insert the data into the INVOICE table you created in Problem 17, as illustrated in Figure P8.16.arrow_forwardRefer to the shampoo_sales.xlsx time-series dataset. This data shows sales of shampoo over three years monthly. Carry out simple exponential smoothing and Holt's Trend-Corrected on this data and determine whether the data shows any trend. Assume the initial value for the level smoothing parameter (alpha) and Trend smoothing parameter (gamma) is 0.5 Month Sales of shampoo over a three year period 1-Jan 266 1-Feb 145.9 1-Mar 183.1 1-Apr 119.3 1-May 180.3 1-Jun 168.5 1-Jul 231.8 1-Aug 224.5 1-Sep 192.8 1-Oct 122.9 1-Nov 336.5 1-Dec 185.9 2-Jan 194.3 2-Feb 149.5 2-Mar 210.1 2-Apr 273.3 2-May 191.4 2-Jun 287 2-Jul 226 2-Aug 303.6 2-Sep 289.9 2-Oct 421.6 2-Nov 264.5 2-Dec 342.3 3-Jan 339.7 3-Feb 440.4 3-Mar 315.9 3-Apr 439.3 3-May 401.3 3-Jun 437.4 3-Jul 575.5 3-Aug 407.6 3-Sep 682 3-Oct 475.3 3-Nov 581.3 3-Dec 646.9arrow_forwarddy Car x Mail Kare x Golden Ge × University x Course Cn x Essential ( x A Content/ x Smartworx Essential C ncia.wwnorton.com/274325 r 3: Problem Set Due Date: 10/15/25 This is a Multiple Choice question/It is worth 1 point/You have 1 of 2 attempts remaining/There is a 1% attempt penalty 17 Question (1 point) ✓ 2nd attempt ☆ Σ entok9826@uapb For the reaction ATP + H2O ADP + P, the AG -30.5 kJ/mol. What would be the associated equilibrium constant for this reaction? Choose one: O A. 35,000 O B. 135,000 © C. 3500 O D. 235,000 > 1st attempt M D . O Oct 13arrow_forward
- WE ARE HIRING! HyphenX SALESFORCE DEVELOPER Exp - 0 - 2.5 years SEND YOUR CV: hr.ops@hyphenxsolutions.comarrow_forwardthe database for a professional hockey league in Canada that contains the following relations: teams(name, id, budget, home_venue_id) players(name, position, id, salary, team_id) ⚫ venues(name, city, capacity, id) games(home_team_id, away_team_id, venue_id, winner_id, date, start-time, id, overtime) tickets(game_id, seat number, price) Create an Entity-Relationship (E-R) model for the hockey league. Draw your model. Your diagram should follow the conventions discussed in lecture. In the diagram, identify all primary keys and mapping cardinalities. Note: You may use software such as draw.io, PowerPoint, etc. to draw your diagram or you may draw it by hand and take a clear photo or scan to insert into your submission.arrow_forwardReading Chapters 10 of Ralph Stair's "Fundamentals of Information Systems" 9th Edition: Discussion questions: 3. Do you feel that the measures in place to protect your personal data you provide to health care organizations are sufficient? Why or why not?arrow_forward
- Watch "Different Programming Languages" video. Discussion question: What did you learned from the programming languages videos?arrow_forwardPlease Do not answer of this computer science question. i will deslike.arrow_forwardJb tujhe rok rha hu question nhi kro kyu kr rhe ho sab pe deslike dunga id band ho jayegi. computer science.arrow_forward
- Do not answer i will unhelpful. Computer Science.arrow_forwardReading Chapters 9 of Ralph Stair's "Fundamentals of Information Systems" 9th Edition: Chapter 9: Problem-solving: 1. Identify three commonly used antivirus software packages. Develop a spreadsheet that compares the cost and fundamental features of each package. Which antivirus solution would you choose and why? Upload an Excel Report with a title, data, and show off what you have learned.arrow_forwardComputer Science A Caesar cipher is one of the simplest forms of encryption. It is a substitution cipher where each letter in the plaintext is shifted a certain number of places down the alphabet. For example, with a right shift of 3, 'A' would be replaced by 'D', 'B' would become 'E', and so on. The alphabet "wraps around," so with a shift of 3, 'X' would become 'A'. Your task is to implement this logic. 1. Develop a set of functions to encrypt a string using a Caesar cipher. 2. Develop a set of functions to decrypt a string using a Caesar cipher. 3. Develop a set of functions to help solve (break) a Caesar cipher by showing all possible shifts.4. Implement all of the above functions for TWO of the following languages: Encrypt, Decrypt, Solve in COBOL Encrypt, Decrypt, Solve in Fortran Encrypt, Decrypt, Solve in Pascal Examples of Usage The usage for encrypt and decrypt should be as follows: encrypt(str, shiftAmount) decrypt(str, shiftAmount) Pascal code fragment: var x: string;…arrow_forward
- C++ Programming: From Problem Analysis to Program...Computer ScienceISBN:9781337102087Author:D. S. MalikPublisher:Cengage LearningProgramming Logic & Design ComprehensiveComputer ScienceISBN:9781337669405Author:FARRELLPublisher:CengageMicrosoft Visual C#Computer ScienceISBN:9781337102100Author:Joyce, Farrell.Publisher:Cengage Learning,
- EBK JAVA PROGRAMMINGComputer ScienceISBN:9781337671385Author:FARRELLPublisher:CENGAGE LEARNING - CONSIGNMENTC++ for Engineers and ScientistsComputer ScienceISBN:9781133187844Author:Bronson, Gary J.Publisher:Course Technology PtrProgramming with Microsoft Visual Basic 2017Computer ScienceISBN:9781337102124Author:Diane ZakPublisher:Cengage Learning




