Exercise 3: 1) Read the following code and try to guess what will be its output. import java.util.": class Car { private int speed; public void setSpeed(int s){ this.speed-s; } public int getSpeed(){ return speed; } } class ChangeSpeedCar extends Thread Car car, int step: public ChangeSpeedCar(Car obj.String s,int a){ super(s); this.step-a; this.car-obj: } public void run(){ for(int i-0;i<10000;i++) ( int c-car.getSpeed();: ctstep: car.setSpeed(c);} public class test { public static void main(String(Jargs){ Car obj =new Car();: obj setSpeed(0): Thi - new ChangeSpeedCar(obj , "MyThreadl",1); ChangeSpeedCar Th2 - new ChangeSpeedCar(obj. "MyThread2",-1): Thl.start(): Th2.start(); try Thread.sleep(1000); }catch(Exception e) System.out.print("Error"):: System.out printin("The speed of the car is "tobj getSpeed();}} Output 2) Write the code and execute it many times. Is the output similar to your previous answer? What's the issue? How can you modify the code to obtain the expected output? Modify the code and execute it.

Exercise 3: 1) Read the following code and try to guess what will be its output. import java.util.": class Car { private int speed; public void setSpeed(int s){ this.speed-s; } public int getSpeed(){ return speed; } } class ChangeSpeedCar extends Thread Car car, int step: public ChangeSpeedCar(Car obj.String s,int a){ super(s); this.step-a; this.car-obj: } public void run(){ for(int i-0;i<10000;i++) ( int c-car.getSpeed();: ctstep: car.setSpeed(c);} public class test { public static void main(String(Jargs){ Car obj =new Car();: obj setSpeed(0): Thi - new ChangeSpeedCar(obj , "MyThreadl",1); ChangeSpeedCar Th2 - new ChangeSpeedCar(obj. "MyThread2",-1): Thl.start(): Th2.start(); try Thread.sleep(1000); }catch(Exception e) System.out.print("Error"):: System.out printin("The speed of the car is "tobj getSpeed();}} Output 2) Write the code and execute it many times. Is the output similar to your previous answer? What's the issue? How can you modify the code to obtain the expected output? Modify the code and execute it.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

See similar textbooks

Similar questions

* CENGAGE MINDTAP Programming Exercise 3-6 Instructions BookstoreCredit.java + 1 import java.util.Scanner; 2 public class BookstoreCredit { To encourage good grades, Hermosa High School has decided to public static void main (String args[]) { // Write your code here 3 award each student a bookstore credit that is 10 times the student's 4 grade point average. 5 } 6 public static void computeDiscount(String name, double gpa) { // Write your code here } In other words, a student with a 3.2 grade point average receives a 8 $32.0 credit. 10 Create an application that prompts a student for a name and grade 11 } point average, and then passes the values to a method ( 12 computeDiscount ) that displays a descriptive message. The message uses the student's name, echoes the grade point average, and computes and displays the credit. An example of the program is shown below: Enter your name >> John Enter your gpa >>3.4 John, your GPA is 3.4, so your credit is $34.0 Grading Write your Java code in…
9 */ 10 public class TwoColors { 11 public static void main(String [] args) { Scanner in = new Scanner(System.in); 12 13 14 15 16 System.out.print("Enter your first favorite color: "); 17 // Step 2: Read in the next line of input and assign it to a String variable color1 18 19 // 20 21 22 // Step 3: Trim spaces from both end and convert the input to all lowercase and assign it back to the same variable 23 24 // 25 // 26 27 28 29 30 // Step 4: Read in the next line of input and assign it to a String variable color2 31 32 // 33 34 35 36 37 // Step 5: Trim spaces from both end and convert the // 38 input to all lowercase and assign it back 39 // to the same variable 40 41 42 43 // Step 6: Display a message according to the following: 44 // first color second color message 45 // light blue red red That's wonderful! 46 // light blue That's even better! 47 // otherwise That's also great! 48 49 50 51 ミミミ

Instructions Insurance.java >- Terminal + 1 import java.util.Scanner; sandbox $ 0 2 class Insurance { The Harrison Group Life Insurance company computes public static void main (String args[]) { // Write your code here annual policy premiums based on the age the customer 4 turns in the current calendar year. The premium is } computed by taking the decade of the customer's age, adding 15 to it, and multiplying by 20. 7 public static int calculatePremium(int curr, int birth) { 8 // Write your code here } For example, a 34-year-old would pay $360, which is calculated by adding the decades (3) to 15, and then 10 } 11 multiplying by 20. Write an application that prompts a user for the current year then a birth year. Pass both to a method that calculates and returns the premium amount, and then display the returned amount. An example of the program is shown below: Enter the current year >> 2020 Enter the birth year >> 2001 The premium is $320 Grading Write your Java code in the area on the…
13 public class MaxMinAtLeastOneValue 14 {. public static void main(String[] args) { Scanner in = new Scanner (System.in); 15 16 17 18 // Step 2: Read in an integer as the count of double values 19 wit an input prompt "Enter the count of values: and store it in a variable // 20 21 // 22 23 // Step 3: Read in a double value with an input prompt 24 25 "Enter the first value: and store it in a variable max 26 27 28 // Step 4: Assign the value of max to another 29 // variable min 30 31 32 // Step 5: Use a for loop to read all remaining double values with an input prompt 33 // 34 // "Enter the next value: 35 // and update max and min 36 37 saved
// JumpinJive.java - This program looks up and prints the names and prices of coffee orders. // Input: Interactive. // Output: Name and price of coffee orders or error message if add-in is not found. import java.util.Scanner; public class JumpinJive { public static void main(String args[]) throws Exception { // Declare variables. String addIn; // Add-in ordered by customer. final int NUM_ITEMS = 5; // Named constant // Initialized array of add-ins. String addIns[] = {"Cream", "Cinnamon", "Chocolate", "Amaretto", "Whiskey"}; // Initialized array of add-in prices. double addInPrices[] = {.89, .25, .59, 1.50, 1.75}; boolean foundIt; int x; // Loop control variable. double orderTotal = 2.00; // All orders start with a 2.00 charge // Get user input. Scanner input = new Scanner(System.in); System.out.print("Enter coffee add-in or XXX to quit: "); addIn = input.nextLine();…
Programming Exercise 5-5A Instructions PastPresentFuture.java >- Terminal 1 import java.util.*; sandbox $ | 2 import java.time.*; Write an application that prompts a user for a month, day, 3 public class PastPresentFuture { Lal and year. Then display the appropriate message: public static void main (String args[]) { // Write your code here 1. YYYY is not this year } 7 } 2. MM was a month earlier this year 8 9 3. MM is a month later this year 10 4. MM is this month An example of the program is shown below: Enter a month >> 05 Enter a day >> Enter a year (four digits) >> 2021 5 is a month later this year Grading Write your Java code in the area on the right. Use the Run button to compile and run the code. Clicking the Run Checks button will run pre-configured tests against your code to calculate a grade. Once you are happy with your results, click the Submit button to record your score.
import java.util.Scanner ; //This program enables the user enters 10 int between -100 and 100 //then a menu is presented to the user to choose an operation to be //performed on the entered numbers. //operations: add all numbers and display their total //display the average of the numbers //find and display all negative numbers //find and display odd numbers //display all numbers in reverse order //display all 5 multiples public class OPonArrays { public static void main (String [] main) { int SIZE = 10; int [] nums= new int [SIZE]; Scanner KB = new Scanner(System.in); // populate the array for(int i = 0; i < 10; i++) { System.out.println("please enter a number between -100 and 100"); nums[i] = KB.nextInt(); } //display all elments for(int i = 0; i < 10; i++) { System .out.println(nums[i]); } fix the error
} } 1-What will happen when you compile and run the following code? Public class test ( Public static void main (string[] arg) { } Int i=0; For (i=100; iM
12 public class CircleAndSphereWhileLoop 13 { public static final doublğ MAX_RADIUS 14 500.0; 15 public static void main(String[] args) 16 17 Scanner in = new Scanner(System.in); 18 19 // Step 2: Read a double value as radius using prompt 20 // "Enter the radius (between 0.0 and 500.0, exclusive): 21 22 23 // Step 3: While the input radius is not in the ragne (0.0, 500.0) 24 Display a message on one line (ssuming input value -1) "The input number -1.00 is out of range. Read a double value as radius using the same promt 25 // // 26 27 28 29 double circumference = 2 * Math.PI * radius; double area = Math.PI * radius * radius; double surfaceArea = 4 * Math.PI * Math.pow(radius, 2); double volume = (4 / 3.8) * Math.PI * Math.pow(radius, 3); 30 31 %3D 32 33 %3D 34 // Step 4: Display the radius, circle circumference, circle area, // 35 sphere surface area, and sphere volume on separate lines with 6 decimal digits 36 37 // // Sample output // The radius // The circle circumference:…
** IT'S A JAVA DEBUGGING PROBLEM! // Application looks up home price // for different floor plans // allows upper or lowercase data entry import java.util.*; public class DebugEight3 { public static void main(String[] args) { Scanner input = new Scanner(System.in); String entry; char[] floorPlans = {'A','B','C','a','b','c'} int[] pricesInThousands = {145, 190, 235}; char plan; int x, fp = 99; String prompt = "Please select a floor plan\n" + "Our floorPlanss are:\n" + "A - Augusta, a ranch\n" + "B - Brittany, a split level\n" + "C - Colonial, a two-story\n" + "Enter floorPlans letter"; System.out.println(prompt); entry = input.next(); plan = entry.charAt(1); for(x = 0; x < floorPlans.length; ++x) if(plan == floorPlans[x]) x = fp; if(fp = 99) System.out.println("Invalid floor plan code entered")); else { if(fp >= 3)…
Lab 9 C balance the same, y, n, why? class CheckingAct { . . . . private int balance; public void processCheck( int amount ) { int charge; if ( balance < 100000 ) charge = 15; else charge = 0; balance = balance - amount - charge ; // change the local copy of the value in "amount" amount = 0 ; } } public class CheckingTester { public static void main ( String[] args ) { CheckingAct act; int check = 5000; act = new CheckingAct( "123-345-99", "Your Name", 100000 ); System.out.println( "check:" + check ); // prints "5000" // call processCheck with a copy of the value 5000 act.processCheck( check ); System.out.println( "check:" + check ); // prints "5000" --- "check" was not changed } }
* CENGAGE MINDTAP Q Search this course Programming Exercise 2-11 Instructions Eggs.java + >- Terminal + 1 import java.util.Scanner; 2 class Eggs { sandbox $ | Meadowdale Dairy Farm sells organic brown eggs to local customers. It public static void main(String[] args) { // Write your code here } 3 charges $3.25 for a dozen eggs, or 45 cents for individual eggs that are not 4 part of a dozen. Write a program that prompts a user for the number of eggs 5 in the order and then display the amount owed with a full explanation using 6 } the following wording: You ordered 27 eggs. That's 2 dozen at $3.25 per dozen and 3 loose eggs at 45 cents each for a total of $7.85. Grading Write your Java code in the area on the right. Use the Run button to compile and run the code. Clicking the Run Checks button will run pre-configured tests against your code to calculate a grade. Once you are happy with your results, click the Submit button to record your Score.