Explanation of Solution
a.
Program code:
NumbersDemo.java
//define the method NumbersDemo
public class NumbersDemo
{
//define the main() method
public static void main(String args[])
{
//create two integer variable
int n1 = 10;
int n2 = 7;
//call the static methods
displayTwiceTheNumber(n1);
displayNumberPlusFive(n1);
displayNumberSquared(n1);
//print new line
System.out.println();
//call the static methods
displayTwiceTheNumber(n2);
displayNumberPlusFive(n2);
displayNumberSquared(n2);
}
//define the method displayTwiceTheNumber()
public static void displayTwiceTheNumber(int n)
{
//multiply n by 2 and print it
System.out.println(2 * n);
}
//define the method displayNumberPlusFive()
public static void displayNumberPlusFive(int n)
{
//add 5 to n and dispaly it
System...
Explanation of Solution
b.
Program code:
NumbersDemo2.java
//import the package
import java.util.Scanner;
//define the method NumbersDemo
public class NumbersDemo2
{
//define the main() method
public static void main(String args[])
{
//create the object of scanner
Scanner in = new Scanner(System.in);
//prompt the user to enter two numbers
System.out.println("Enter the numbers");
//scan for the values
int n1 = in.nextInt();
int n2 = in.nextInt();
//print new line
System.out.println();
//call the static methods
displayTwiceTheNumber(n1);
displayNumberPlusFive(n1);
displayNumberSquared(n1);
//print new line
System.out.println();
//call the static methods
displayTwiceTheNumber(n2);
displayNumberPlusFive(n2);
displayNumberSquared(n2);
}
//define the method displayTwiceTheNumber()
public static void displayTwiceTheNumber(int n)
{
//multiply n by 2 and print it
System...
Trending nowThis is a popular solution!
Chapter 3 Solutions
Java Programming, Loose-Leaf Version
- Please use Java as programming language Create a class whose main() holds two integer variables. Assign values to the variables. Create two methods named sum() and difference, that compute the sum and difference between the two variables respectively. Each method should perform the computation and display the results. In turn, call the two methods passing the values of the 2 variables. Create another method named product. The method should compute the product of the 2 numbers but will not display the answer. Instead, the method should return the answer to the calling main() which displays the answer. Provide your own screen display and class name.arrow_forwardThere are 12 inches in a foot and 3 feet in a yard. Create a class named InchConversion. Its main() method accepts a value in inches from a user at the keyboard, and in turn passes the entered value to two methods. One converts the value from inches to feet, and the other converts the same value from inches to yards. Each method displays the results with appropriate explanation. Save the application as InchConversion.java.arrow_forwardThis assigment wants me to: Assume that a gallon of paint covers about 350 square feet of wall space. Create an application with a main() method that prompts the user for the length, width, and height of a rectangular room. Pass these three values to a method that does the following: Calculates the wall area for a room Passes the calculated wall area to another method that calculates and returns the number of gallons of paint needed Displays the number of gallons needed Computes the price based on a paint price of $32 per gallon, assuming that the painter can buy any fraction of a gallon of paint at the same price as a whole gallon Returns the price to the main() method The main() method displays the final price. For example: You will need 2.0 gallons The price to paint the room is $64.0 here is my code and this is all i have so far help please ! import java.util.Scanner; public class PaintCalculator { public static void main (String args[]) { int AreaPerGalllon =…arrow_forward
- USE JAVA IDE Create a class that has three methods. One method is to input three numbers. The second method will return the largest number between the three numbers. The third method will return the smallest number between the three numbers. Since the largest and smallest number are both returned values, display these values in the main method.arrow_forwardPlease use Java as programming language Create a class named Commission that includes 3 variables: a double sales figure, a double commission rate and an integer commission rate. Create 2 overloaded methods named computeCommission(). The first method takes 2 double arguments representing sales and rate, multiplies them and then displays the results. The second method takes 2 arguments: a double sales figure and an integer commission rate. This method must divide the commission rate by 100.0 before multiplying by the sales figure and displaying the commission. Supply appropriate values for the variables. Test each overloaded methods.arrow_forwardModify the Percentages application whose main() method holds two double variables. Assign values to the variables. Pass both variables to a method named computePercent() that displays the two values and the value of the first number as a percentage of the second one. For example, if the numbers are 2.0 and 5.0, the method should display a statement similar to “2.0 is 40.0 percent of 5.0.” Then call the method a second time, passing the values in reverse order. For testing use the values 2.0 and 5.0. An example of the program is shown below: 2.0 is 40.0 percent of 5.0 5.0 is 250.0 percent of 2.0arrow_forward
- Modify the Percentages application whose main() method holds two double variables. Assign values to the variables. Pass both variables to a method named computePercent() that displays the two values and the value of the first number as a percentage of the second one. For example, if the numbers are 2.0 and 5.0, the method should display a statement similar to “2.0 is 40.0 percent of 5.0.” Then call the method a second time, passing the values in reverse order. For testing use the values 2.0 and 5.0. An example of the program is shown below: 2.0 is 40.0 percent of 5.0 5.0 is 250.0 percent of 2.0arrow_forwardVariables name: Choose meaningful and descriptive names. No x, y … etc. Use lowercase. If the name consists of several words, concatenate all in one, uselowercase for the first word, and capitalize the first letter of each subsequent word inthe name. For example, the variables radius and area, and the method computeArea.3. File type: only JAVA file is allowed. Name it as Assignment2. Java5. Please add the appropriate comments for each step you add. In the top of the program, addyour name, time of starting writing the code and title of the assignment. Extra informationwould be greatarrow_forwardCreate an application named Percentages whose main() method holds two double variables. Assign values to the variables. Pass both variables to a method named computePercent() that displays the two values and the value of the first number as a percentage of the second one. For example, if the numbers are 2.0 and 5.0, the method should display a statement similar to “2.0 is 40 percent of 5.0.” Then call the method a second time, passing the values in reverse order.arrow_forward
- ● Create a class named Decimals. Write a static method named printDecimalDigits that takes a double as a parameter and does not return anything. ● ● ● The method should print out "Digits after decimal point: ", followed by all the digits after the decimal point on one line (do not include the decimal point). Additional rule: Your code must not contain any loops. Create a test class named DecimalsTest that contains the main method and use the sample usage below to check your code. Method Call Decimals.print DecimalDigits (37.2) Decimals.print DecimalDigits (1000) Method Output Digits after decimal point: 2 Digits after decimal point: 0 Decimals.printDecimalDigits (18.3927493038) Digits after decimal point: 3927493038arrow_forwardHete_matching the code EXACTLY how it is below, etc.).arrow_forwardPlease provide JAVA source code for following assignment. Please attach proper comments and read the full requirements. The local Driver’s License Office has asked you to write a program that grades the written portion of the driver’s license test The test has 20 multiple choice questions. Here are the correct answers: B D A A C A B A C D B C D A D C C D D A A student must correctly answer 15 of the 20 questions to pass the exam. Write a class named Drivertest that holds the correct answers to the test in an array field. The class should also have an array field that holds the student’s answers. The class should have the following methods: passed. Returns true if the student passed the test, or false if the student failed totalCorrect. Returns the total number of correctly answered questions totalIncorrect. Returns the total number of incorrectly answered questions questionsMissed. An int array containing the…arrow_forward
- EBK JAVA PROGRAMMINGComputer ScienceISBN:9781337671385Author:FARRELLPublisher:CENGAGE LEARNING - CONSIGNMENTMicrosoft Visual C#Computer ScienceISBN:9781337102100Author:Joyce, Farrell.Publisher:Cengage Learning,EBK JAVA PROGRAMMINGComputer ScienceISBN:9781305480537Author:FARRELLPublisher:CENGAGE LEARNING - CONSIGNMENT