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1. In this Java program. Explain everyline of this code.
Source Code:
import java.util.*;
public class Main
{
public static void main(String[] args) {
Scanner keyboard = new Scanner(System.in);
System.out.print("Enter the number of lockers: ");
int noOfLockers = keyboard.nextInt();
boolean[] isLockerOpen = new boolean[noOfLockers + 1];
for (int i = 1; i <= noOfLockers; i++) {
for (int j = i; j <= noOfLockers; j += i) {
isLockerOpen[j] = !isLockerOpen[j];
}
}
System.out.println("\n\nThe number of lockers: " + noOfLockers);
System.out.println("The locker numbers of the lockers that are open: ");
for (int i = 1; i <= noOfLockers; i++) {
if (isLockerOpen[i] == true)
System.out.print(i + " ");
}
}
}
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- 12345678901 2 public class BMICalculation { 3- Y 10 import java.util.Scanner; 11 12 13 } public static void main(String args[]) { Scanner in = new Scanner(System.in); System.out.print("Enter your weight in pounds") in.nextInt (); System.out.print("Enter your height in inches") in.nextDouble(); double feet BMI bmi new BMI (weight, feet); System.out.println("BMI: } int weight w +bmi.getBMI()); System.out.println(bmi.getStatus()); line 9 i got two errors saying cannot find symbolimport java.util.Scanner; public class CharMatch { public static void main(String[] args) { Scanner scnr = new Scanner(System.in); String userString; char charToFind; int strIndex; userString = scnr.nextLine(); charToFind = scnr.next().charAt(0); strIndex = scnr.nextInt(); /* Your code goes here */ }}Explain these codes import java.text.DecimalFormat;import java.util.Scanner; public class Main{ private static DecimalFormat df2 = new DecimalFormat("#.00"); public static void main(String[] args) { Scanner input = new Scanner(System.in); System.out.println(); System.out.print("\tEnter Name : "); String emp_name =input.nextLine(); System.out.print("\tPress F for Full Time or P for Part Time : "); char job_criteria =input.next().charAt(0); char select = Character.toUpperCase(job_criteria); System.out.println(); if (select == 'F') { System.out.print("\t------ Full Time Employee ----- "); System.out.println(); System.out.print("\tEnter Basic Pay : "); double basic_pay = input.nextDouble(); FullTimeEmployee emp = new FullTimeEmployee(); emp.setName(emp_name); emp.setMonthlySalary(basic_pay); System.out.println("\n");…
- import java.util.*;public class TestAverage {public static void main(String[] args) {int test1, test2, test3, sum;Scanner reader = new Scanner(System.in);System.out.println("Enter test 1");test1 = reader.nextInt();System.out.println("Enter test 2");test2 = reader.nextInt();System.out.println("Enter test 3");test3 = reader.nextInt();sum = test1 + test2 + test3;System.out.println("The sum is " + sum);System.out.println("The average is " + sum / 3);}}a. Briefly explain what this code does.b. There is one logic error in this code explain what is wrong and how to fix it.import java.util.Scanner; public class RunBloodData { public static void main(String[] args) { Scanner SC = new Scanner(System.in); String b_Type,r_Factor; System.out.print("Enter blood type of patient: "); b_Type=SC.nextLine(); System.out.print("Enter the Rhesus factor (+ or -): "); r_Factor=SC.nextLine(); BloodData b_data; if(b_Type.equals("")&& r_Factor.equals("")) { b_data=new BloodData(); b_data.display(); } else { b_data=new BloodData(b_Type,r_Factor); b_data.display(); } } } class BloodData{ static String bloodType; static String rhFactor; public BloodData() { bloodType="O"; rhFactor="+"; } public BloodData(String b_Type,String r_Factor) { bloodType=b_Type; rhFactor=r_Factor; } public void display(){ System.out.println(bloodType+rhFactor+" is added to the bloodbank.\n"); } }public class ReversedDigit { public static void main(String[] args) { Scanner scan = new Scanner(System.in); System.out.println("Please enter a number: "); int number = scan.nextInt(); int reversedNumber = 0; do { reversedNumber = number%10; number = number/10; } while (number > 0); }} Modify the coding example, to count what is the total of all digits of a number. For example, when user enters 301, your output is 4 because 3+0+1=4; when user enters 5116, your output is 13 (5+1+1+6 = 13).
- import java.util.Scanner; public class PetInformation {public static void main(String[] args) {Scanner scnr = new Scanner(System.in); Pet myPet = new Pet(); Cat myCat = new Cat(); String petName, catName, catBreed; int petAge, catAge; petName = scnr.nextLine(); petAge = scnr.nextInt(); scnr.nextLine(); catName = scnr.nextLine(); catAge = scnr.nextInt(); scnr.nextLine(); catBreed = scnr.nextLine(); // Create generic pet (using petName, petAge) and then call printInfo myPet.setName(petName); myPet.setAge(petAge); myPet.printInfo(); // Create cat pet (using catName, catAge, catBreed) and then call printInfo myCat.setName(catName); myCat.setAge(catAge); myCat.setBreed(catBreed); myCat.printInfo(); // Use getBreed(), to output the breed of the cat System.out.println(" Breed: " + myCat.getBreed());}}Code example 2-1import java.util.Scanner;public class InvoiceApp {public static void main(String[] args) {Scanner sc = new Scanner(System.in);String choice = “y”;While (choice.equals(“y”)) {System.out.print("Enter subtotal: ");double subtotal = sc.nextDouble();double salesTax = subtotal * .0875;double invoiceTotal = subtotal + salesTax;String message = “Subtotal = ” + subtotal + “\n”+ “ Sales tax = ” + salesTax + “\n”+ “Invoice total = ” + invoiceTotal + “\n\n”System.out.println(message);System.out.print(“Continue? Enter y or n: ”);Choice = sc.next();}}}38. (Refer to code example 2-1.) If the user enters “Y” when asked if he/she wants to continue, the application will a. repeat the while loop b. display a blank line, then repeat the while loop c. EndCode example 2-1import java.util.Scanner;public class InvoiceApp {public static void main(String[] args) {Scanner sc = new Scanner(System.in);String choice = “y”;While (choice.equals(“y”)) {System.out.print("Enter subtotal: ");double subtotal = sc.nextDouble();double salesTax = subtotal * .0875;double invoiceTotal = subtotal + salesTax;String message = “Subtotal = ” + subtotal + “\n”+ “ Sales tax = ” + salesTax + “\n”+ “Invoice total = ” + invoiceTotal + “\n\n”System.out.println(message);System.out.print(“Continue? Enter y or n: ”);Choice = sc.next();}}} (Refer to code example 2-1.) If the user enters 100 the first time the while loop is executed, what will the program display at the console? a. Subtotal: 100.0 Sales tax: 8.75 Invoice total: 108.75 b. Subtotal = 100.0 Sales tax = 8.75 Invoice total = 108.75 c. Subtotal = 100.0 Sales tax = 8.75Invoice total = 108.75 d. Subtotal = 100.0 Sales tax = 8.75Invoice total = 108.75
- Create a Flowchart //Java Source Code :- import java.util.Scanner; public class bExpert { public static void main(String[] args) { Scanner sc = new Scanner(System.in); System.out.println("\nVALUES"); System.out.print("Value 1: "); int v1 = sc.nextInt(); System.out.print("Value 2: "); int v2 = sc.nextInt(); System.out.print("Value 3: "); int v3 = sc.nextInt(); System.out.println("\nPROCESS"); System.out.println("\n1. Summation"); System.out.println("2. Product"); System.out.println("3. Min / Max"); System.out.println("4. Odd / Even"); char st = 'y'; while(st != 'n'){ System.out.print("\nCHOICE: "); int ch = sc.nextInt(); switch(ch) { case 1: int sum = v1 + v2 + v3; System.out.println("\nSum = "+sum); break; case 2: int prod =…import java.util.Scanner; public class StateInfo { /* Your code goes here */ public static void main(String[] args) { Scanner scnr = new Scanner(System.in); String stateCode; String stateName; stateCode = scnr.next(); stateName = scnr.next(); printStateInfo(stateCode, stateName); }}Fix this program import java.util.Scanner; public class main { public static void WeShipItBad(String[] args) { int OVERNIGHT_CHARGE = 5; int TWO_DAY_CHARGE = 2; int ECONOMY_CHARGE = 1; Scanner console = new Scanner(System.in); // Scanner object to pass around. // Get item description. String itemDescription = getItemDescription(console); if (itemDescription.equals("")) { System.out.println("Invalid description."); } shipWeight = getShipWeight(scnr); if (shipWeight <= 0.0) { System.out.println(); System.out.println("Invalid weight."); } char shipMethod = getShipMethod(council); shipMethod = Character.toUpperCase(shipMethod); double shipCost = calculateShip(shipWeight, shipMethod); displayResults(itemDescription, shipCost, shipMethod, shipWeight); } public static void getItemDescription(Scanner console) { System.out.println("Enter item description:"); String description =…
