Java How To Program (Early Objects)
10th Edition
ISBN: 9780133807943
Author: Deitel, Paul
Publisher: Pearson Education
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 2, Problem 22.1E
Circumference and Area of a Circle) Here’s a peek ahead. In this chapter, you learned about integers and the type int. Java can also represent floating-point numbers that contain decimal points, such as 3.14159. Write an application that inputs from the user the radius of a circle as an integer and prints the circle’s diameter, circumference and area using the floating-point value 3.14159 for π. Use the techniques shown in Fig. 2.7. [Note: You may also use the predefined constant Math.PI for the value of π. This constant is more precise than the value 3.14159. Class Math is defined in package java.lang. Classes in that package are imported automatically, so you do not need to import class Math to use it.] Use the following formulas (r is the radius):
diameter = 2r
circumference = 2πr
area = πr2
Do not store the results of each calculation in a variable. Rather, specify each calculation as the value that will be output in a System.out.printf statement. The values produced by the circumference and area calculations are floating-point numbers. Such values can be output with the format specifier %f in a System.out.printf statement. You’ll learn more about floatingpoint numbers in Chapter 3.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
For My Java class, this being my first programming class, I have been asked to complete the following to learn Loops. Next is arrays but I was hoping to get help understanding this first. Thanks
1-Design a program that asks the user to enter a series of positive numbers. The user should enter a negative number to signal the end of the series. After all the positive numbers have been entered, the program should display their sum.
2-The distance a vehicle travels can be calculated as follows: Distance = Speed x Time
Design a program that asks a user for the speed of a vehicle in miles per hour and how many hours it has travelled (Assume the two values are integers). Your program should then use a loop to display the distance the vehicle has traveled for each hour of that time period. (For example, entering 50 mph and 4 hours should produce output like: Hour 1: 50 miles, Hour 2: 100 miles, Hour 3: 150 miles, Hour 4: 200 miles. )
3-Design a program that uses nested loops to display a…
Use Java
⮚ Roman numerals are represented by seven different symbols: I, V, X, L, C, D and M. ⮚ Symbol Value I 1 V 5 X 10 L 50 C 100 D 500 M 1000.⮚ For example, 2 is written as II in Roman numeral, just two ones added together. 12 is written as XII, which is simply X + II. The number 27 is written as XXVII, which is XX + V + II. ⮚ Roman numerals are usually written largest to smallest from left to right. However, the numeral for four is not IIII. Instead, the number four is written as IV. Because the one is before the five we subtract it making four. The same principle applies to the number nine, which is written as IX. There are six instances where subtraction is used: I can be placed before V (5) and X (10) to make 4 and 9. X can be placed before L (50) and C (100) to make 40 and 90. C can be placed before D (500) and M (1000) to make 400 and 900. ⮚ Given a roman numeral, convert it to an integer
Write an application that allows you to enter nine(and only nine, no more no less) integers and displays the values, their mean, and their median. (Java)
Chapter 2 Solutions
Java How To Program (Early Objects)
Ch. 2 - Fill in the blanks in each of the following...Ch. 2 - Fill in the blanks in each of the following...Ch. 2 - Fill in the blanks in each of the following...Ch. 2 - Fill in the blanks in each of the following...Ch. 2 - Fill in the blanks in each of the following...Ch. 2 - Fill in the blanks in each of the following...Ch. 2 - Prob. 1.7SRECh. 2 - State whether each of the following is true or...Ch. 2 - State whether each of the following is true or...Ch. 2 - State whether each of the following is true or...
Ch. 2 - State whether each of the following is true or...Ch. 2 - State whether each of the following is true or...Ch. 2 - Write statements to accomplish each of the...Ch. 2 - Write statements to accomplish each of the...Ch. 2 - Write statements to accomplish each of the...Ch. 2 - Prob. 3.4SRECh. 2 - Prob. 3.5SRECh. 2 - Write statements to accomplish each of the...Ch. 2 - Prob. 4.1SRECh. 2 - Identify and correct the errors in each of the...Ch. 2 - Write declarations, statements or comments that...Ch. 2 - Write declarations, statements or comments that...Ch. 2 - Prob. 5.3SRECh. 2 - Write declarations, statements or comments that...Ch. 2 - Write declarations, statements or comments that...Ch. 2 - Write declarations, statements or comments that...Ch. 2 - Write declarations, statements or comments that...Ch. 2 - Write declarations, statements or comments that...Ch. 2 - Write declarations, statements or comments that...Ch. 2 - Write declarations, statements or comments that...Ch. 2 - Write declarations, statements or comments that...Ch. 2 - Using the statements you wrote in Exercise 2.5,...Ch. 2 - Fill in the blanks in each of the following...Ch. 2 - Fill in the blanks in each of the following...Ch. 2 - Fill in the blanks in each of the following...Ch. 2 - Fill in the blanks in each of the following...Ch. 2 - Prob. 1.5ECh. 2 - Fill in the blanks in each of the following...Ch. 2 - Write Java statements that accomplish each of the...Ch. 2 - Write Java statements that accomplish each of the...Ch. 2 - Write Java statements that accomplish each of the...Ch. 2 - Prob. 3.1ECh. 2 - State whether each of the following is true or...Ch. 2 - State whether each of the following is true or...Ch. 2 - State whether each of the following is true or...Ch. 2 - Assuming that x = 2 and y = 3, what does each of...Ch. 2 - Assuming that x = 2 and y = 3, what does each of...Ch. 2 - Assuming that x = 2 and y = 3, what does each of...Ch. 2 - Prob. 4.4ECh. 2 - Prob. 5.1ECh. 2 - Which of the following Java statements contain...Ch. 2 - Prob. 5.3ECh. 2 - Which of the following Java statements contain...Ch. 2 - Given that y=ax3+7, which of the following are...Ch. 2 - Given that y=ax3+7, which of the following are...Ch. 2 - Given that y=ax3+7, which of the following are...Ch. 2 - Given that y=ax3+7, which of the following are...Ch. 2 - Given that y=ax3+7, which of the following are...Ch. 2 - Given that y=ax3+7, which of the following are...Ch. 2 - State the order of evaluation of the operators in...Ch. 2 - Prob. 7.2ECh. 2 - State the order of evaluation of the operators in...Ch. 2 - Display the message "Enter an integer: ", leaving...Ch. 2 - Assign the product of variables b and c to the int...Ch. 2 - Use a comment to state that a program performs a...Ch. 2 - Prob. 9.1ECh. 2 - (Comparing Integers) Write an application that...Ch. 2 - Which of the following Java statements contain...Ch. 2 - Given that y = ax3 + 7, which of the following are...Ch. 2 - State the order of evaluation of the operators in...Ch. 2 - What does the following code print?...Ch. 2 - What does the following code print?...Ch. 2 - What does the following code print?...Ch. 2 - What does the following code print?...Ch. 2 - (Largest and Smallest Integers) Write an...Ch. 2 - (Odd or Even) Write an application that reads an...Ch. 2 - Write an application that reads two integers,...Ch. 2 - Write an application that displays a checkerboard...Ch. 2 - Circumference and Area of a Circle) Heres a peek...Ch. 2 - (Integer Value of a Character) Heres another peek...Ch. 2 - (Separating the Digits in an Integer) Write an...Ch. 2 - Prob. 25.1ECh. 2 - Prob. 26.1ECh. 2 - (Body Mass Index Calculator) We introduced the...Ch. 2 - (World Population Growth Calculator) Search the...
Additional Engineering Textbook Solutions
Find more solutions based on key concepts
Design a For loop that calculates the total of the following series of numbers: 130+229+328+...+301
Starting Out with Programming Logic and Design (4th Edition)
Each of the following program segments has some errors. Locate as many as you can. A) Cout "Enter a number: ";...
Starting Out with C++: Early Objects (9th Edition)
Suppose the memory cells at addresses 0x00 through 0x09 in the Vole contain the following bit patterns: Address...
Computer Science: An Overview (12th Edition)
This is an object that can compare two other objects and determine whether greater than, less than, or equal to...
Starting Out with Java: From Control Structures through Data Structures (4th Edition) (What's New in Computer Science)
If the following statement were used in a Java program, it would cause something to be written to the screen. W...
Absolute Java (6th Edition)
Modify the Product_T table by adding an attribute QtyOnHand that can be used to track the finished goods invent...
Modern Database Management (12th Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Similar questions
- 5. You are playing a game that has two dice - one die has 6 sides numbered 1 through 6 and the second die has 8 sides numbered 1 through 8. A turn involves rolling both die together. Write Java code to play 1,000 turns and keep track of the sum of the two dice in each roll I.e, (2 through 14). When all 1,000 turns have been completed, print a formatted table showing the value of the sum of the two dice (2 through 14) and the number of times that value occurred.arrow_forwardWrite a complete Java program that performs the following tasks: 1. Ask the user to enter the last two digits of his/her student ID. 2. Break the number into two digits using arithmetic operators, then store the first and second digits in integer variables named digitl and digit2 3. Find and print the following: Note: • The product of digit] and digit2. The sum of digit1 and digit2 • The average of digit1 and digit2 • The maximum of the two numbers; digit1 digit2 using a method from the class Math. Typical run of the program 03.java Compile Messages IGRASP Messages Run 1/0 Interactions End Clear Help -jGRASP exec: java 03 Enter the last two numbers of your student IDI 46 The first digit 4, the second digit -6 Product: 4 6 = 24.0 sum: 4 + 6 - 10.0 average 15.0 maximun is 6 GRASP: operation complete.arrow_forwardHelp needed ASAP! Language: JAVA Fill in your code for the following program that takes two words as input from the keyboard, representing a user ID and a password, then the program does the following: If the user ID and the password match “admin” and “open”, respectively, then output “Welcome”. If the user ID matches “admin” and the password does not match “open”, output “Wrong password”. If the password matches “open” and the user ID does not match “admin”, output “Wrong user ID”. Otherwise, output “Sorry, wrong ID and password”. import java.util.Scanner; public class Login{ public static void main(String[] args){ Scanner scan = ____ Scanner(________);//instantiate a Scanner object String userID = scan._________; // read the user ID String password = scan.__________; // read the password if(________________________________) { System.out.println("Welcome"); } else if(___________________________) { System.out.println("Wrong password"); } else…arrow_forward
- You are playing a game that has two dice – one die has 6 sides numbered 1 through 6 and the second die has 8 sides numbered 1 through 8. A turn involves rolling both die together. Write Java code to play 1,000 turns and keep track of the sum of the two dice in each roll i.e, (2 through 14). When all 1,000 turns have been completed, print a formatted table showing the value of the sum of the two dice (2 through 14) and the number of times that value occurred.arrow_forwardWrite an application that allows you to enter nine integers and displays the values, their mean, and their median. (Java)arrow_forwardUse java code Body Mass Index (BMI) is a measure of health on weight. It can be calculated by taking your weight in kilograms and dividing by the square of your height in meters. The interpretation of BMI for people 16 years or older is as follows: BMI below 16 16-18 19-24 25-29 30-35 above 35 Interpretation seriously underweight underweight normal weight overweight seriously overweight gravely overweight Write a Java program that prompts the user to enter a weight in kilograms and height in meter and display the BMI. Use nested if- else statements to solve this exercise. Here is a sample run: Enter weight in kilograms: 66.22 Enter height in meters: 1.788 Your BMI is 20.71353142 You are normal weightarrow_forward
- Write an application in Java that asks the user to enter two integers, obtains them from the user and prints their sum, product, difference and quotient (division). Sample Run Enter first integer: 18 Enter second integer: 5 Sum is 23 Product is 90 Difference is 13 Quotient is 3 Note: The exact division of 18 by 5 is 3.6. However, assuming you are using only integer (int) variables in your program, then the integer division of 18 by 5 is 3. IMPORTANT. Follow the various style conventions we've discussed in class (variable naming, constants, spaces, etc) including putting comments in your program.arrow_forwardPlease Explain the Steps. (In Java Programming) See expected output below. Create a new Java application called "WeightedAvgDropSmallest" (without the quotation marks) according to the following guidelines. The program prompts the user for five to ten numbers all on one line, separated by spaces, calculates the weighted average of all those numbers except the lowest n numbers, where n and the weight are also given by the user, and displays all the numbers, the weight, the number of lowest numbers dropped, and the calculated average to the user. The program uses methods to: Get the numbers used to calculate the average. Get the number of lowest numbers to drop before calculating the average. Get the weight, a double greater than 0 and less than or equal to 1. Calculate the weighted average of the numbers (except the lowest n numbers) entered by the user. Print the results. 1. The first method should take no arguments and return an array list of doubles. 2. The second method…arrow_forwardProblem Description: The international standard letter/number mapping found on the telephone keypad is shown below: Write a pseudocode and program that reads a letter and displays its corresponding digit. 2 3 1 ABC DEF 4 5 6 GHI JKL MNO 7 8 9 PQRS TUV WXYZ 0 Write a pseudocode on how you would solve the problem in your own word. Write a java program called Phone considering the following directions. Practice here first then write answer on the answer sheet. Also, make sure distinguish high and low caps as Java is case – sensitive. Import and declare a Scanner class Ask user for an Upper – case letter Use the switch statement along with case and break Use the System.exit(1) in the default to terminate the program Print the corresponding digitarrow_forward
- Exercise GradesStatistics (Method): Write a program called GradesStatistics, which reads in n grades (of int between 0 and 100, inclusive) and displays the average, minimum, maximum, median and standard deviation. Display the floating-point values upto 2 decimal places. Your output shall look like:Enter the number of students: 4Enter the grade for student 1: 50Enter the grade for student 2: 51Enter the grade for student 3: 56Enter the grade for student 4: 53{50,51,56,53}The average is: 52.50The median is: 52.00The minimum is: 50The maximum is: 56The standard deviation is: 2.29The formula for calculating standard deviation is:Hints:public class GradesStatistics {public static int[] grades; // Declare an int[], to be allocated later.// This array is accessible by all the methods.public static void main(String[] args) {readGrades(); // Read and save the inputs in int[] gradesprintArray(grades);System.out.println("The average is " + average(grades));System.out.println("The median is " +…arrow_forwardAssignment1 In this assignment you have to write a java program Assignment1 that contains all three zeros of the calculates the following third degree polynomial: 23 = -1 The solutions must be determined using the Newton-Raphson method. Work with an absolute accuracy of ɛ =0.00001. It means |x+1- X,] > ɛ Make sure your output looks like the Example output ( Like here below ). The real part and imaginary part must be rounded to three decimal places. The order of the zero points are not important. This order may be different for you. Example Output: PS C:\ Users\ Sam\Documents\Homework\PR> java Assignment1 Zero point 1 is equal to : -1.0 Zero point 2 is equal to : 0.5 - 0.866i Zero point 3 is equal to : 0.5 +0.866i Example Output for: f(z)= z³ +1arrow_forwardCan you help me with the codes required for this assignments? the programming langauge is Java and the order of question is written below (Find future dates) Write a program that prompts the user to enter an integer for today’s day of the week (Sunday is 0, Monday is 1, …, and Saturday is 6). Also prompt the user to enter the number of days after today for a future day and display the future day of the week. import java.util.Scanner; (Sort three integers) Write a program that prompts the user to enter three integers and display the integers in non-decreasing order. Sample output:Enter three integers: 10 2 7 2 7 10 3. (Business: check ISBN-10) An ISBN-10 (International Standard Book Number) consists of 10 digits: d1d2d3d4d5d6d7d8d9d10. The last digit, d10, is a checksum, which is calculated from the other nine digits using the following formula: (d1 * 1 + d2 * 2 + d3 * 3 + d4 * 4 + d5 * 5 + d6 * 6 + d7 * 7 + d8 * 8 + d9 * 9) % 11 If the checksum is 10, the last…arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Database System ConceptsComputer ScienceISBN:9780078022159Author:Abraham Silberschatz Professor, Henry F. Korth, S. SudarshanPublisher:McGraw-Hill Education
Starting Out with Python (4th Edition)Computer ScienceISBN:9780134444321Author:Tony GaddisPublisher:PEARSON
Digital Fundamentals (11th Edition)Computer ScienceISBN:9780132737968Author:Thomas L. FloydPublisher:PEARSON
C How to Program (8th Edition)Computer ScienceISBN:9780133976892Author:Paul J. Deitel, Harvey DeitelPublisher:PEARSON
Database Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781337627900Author:Carlos Coronel, Steven MorrisPublisher:Cengage Learning
Programmable Logic ControllersComputer ScienceISBN:9780073373843Author:Frank D. PetruzellaPublisher:McGraw-Hill Education
Database System Concepts
Computer Science
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:McGraw-Hill Education
Starting Out with Python (4th Edition)
Computer Science
ISBN:9780134444321
Author:Tony Gaddis
Publisher:PEARSON
Digital Fundamentals (11th Edition)
Computer Science
ISBN:9780132737968
Author:Thomas L. Floyd
Publisher:PEARSON
C How to Program (8th Edition)
Computer Science
ISBN:9780133976892
Author:Paul J. Deitel, Harvey Deitel
Publisher:PEARSON
Database Systems: Design, Implementation, & Manag...
Computer Science
ISBN:9781337627900
Author:Carlos Coronel, Steven Morris
Publisher:Cengage Learning
Programmable Logic Controllers
Computer Science
ISBN:9780073373843
Author:Frank D. Petruzella
Publisher:McGraw-Hill Education
Program to find HCF & LCM of two numbers in C | #6 Coding Bytes; Author: FACE Prep;https://www.youtube.com/watch?v=mZA3cdalYN4;License: Standard YouTube License, CC-BY