Videos
a.
Explanation of Solution
Program:
File name: “RetirementGoal.java”
//Import necessary header files
import java.util.Scanner;
//Define a class named RetirementGoal
public class RetirementGoal
{
//Define main method
public static void main (String[] args)
{
//Create an object for the Scanner class
Scanner input = new Scanner(System.in);
//Declare the variables
int years;
int saveAmount;
int total;
/*Prompt the user to enter the number of years the user
has until retirement */
System.out.print("How many years until retirement? >> ");
years = input.nextInt();
/*While condition if the user enters 0 or a negative number*/
while(years <= 0)
{
//Print the error message
System.out.println("Years cannot be 0 or negative");
//Reprompt the user to make a valid entry
System...
b.
Explanation of Solution
Program:
File name: “RetirementGoal2.java”
//Import necessary header files
import java.util.Scanner;
//Define a class named RetirementGoal2
public class RetirementGoal2
{
//Define main method
public static void main (String[] args)
{
//Create an object for the Scanner class
Scanner input = new Scanner(System.in);
//Declare the variables
int years;
int saveAmount;
int total;
final double RATE = 0.04;
/*Prompt the user to enter the number of years the user
has until retirement */
System.out.print("How many years until retirement? >> ");
years = input.nextInt();
/*While condition if the user enters 0 or a negative number*/
while(years <= 0)
{
//Print the error message
System.out.println("Years cannot be 0 or negative");
//Reprompt the user to make a valid entry
System.out.print("Please renter years >> ");
years = input.nextInt();
}
/*Prompt the user to enter the amount of money the user can save annually*/
System.out.print("How much can you save annually? >> ");
saveAmount = input.nextInt();
/*While condition if the user enters 0 or a negative number*/
while(saveAmount <= 0)
{
//Print the error message
System...
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Chapter 6 Solutions
Java Programming (MindTap Course List)
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- Consider the ER diagram of online sales system above. Based on the diagram answer the questions below, a) Based on the ER Diagram, determine the Foreign Key in the Product Table. Just mention the name of the attribute that could be the Foreign Key. b) Mention the relationship between the Order and Customer Entities. You can use the following: 1:1, 1:M, M:1, 0:1, 1:0, M:0, 0:M c) Is there a direct relationship that exists between Store and Customer entities? Answer Yes/No? d) Which of the 4 Entities mention in the diagram can have a recursive relationship? e) If a new entity Order_Details is introduced, will it be a strong entity or weak entity? If it is a weak entity, then mention its type?arrow_forwardNo aiarrow_forwardGiven the dependency diagram of attributes {C1,C2,C3,C4,C5) in a table shown in the following figure, (the primary key attributes are underlined)arrow_forward
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- Consider the ER diagram of online sales system above. Based on the diagram answer the questions below, 1. Based on the ER Diagram, determine the Foreign Key in the Product Table. Just mention the name of the attribute that could be the Foreign Key 2. Is there a direct relationship that exists between Store and Customer entities? AnswerYes/No?arrow_forwardConsider the ER diagram of online sales system above. Based on the diagram answer thequestions below, 1. Mention the relationship between the Order and Customer Entities. You can use the following: 1:1, 1:M, M:1, 0:1, 1:0, M:0, 0:M 2. Which one of the 4 Entities mention in the diagram can have a recursive relationship? 3. If a new entity Order_Details is introduced, will it be a strong entity or weak entity? If it is a weak entity, then mention its type (ID or Non-ID, also Justify why)? NO AI use pencil and paperarrow_forwardSTEP 1: The skeleton Let's start by creating a skeleton for some of the classes you will need. • Write a class called Tile. You can think of a tile as a square on the board on which the game will be played. We will come back to this class later. For the moment you can leave it empty while you work on creating classes that represents characters in the game. • Write an abstract class Fighter which has the following private fields: - A Tile field named position, representing the fighter's position in the game. A double field named health, representing the fighter's health points (HP). An int field named weaponType, representing the type of weapon the fighter is using. This value is used to rank different weapon types: higher values indicate higher weapon ranks. -An int field named attackDamage, representing the fighter's attack power. The class must also have the following public methods: 3 A constructor that takes as input a Tile indicating the position of the fighter, a double…arrow_forward
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