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- Below we have class diagrams with three classes for a simple java based parking management class. Use the classes below to write java code for classes :a parking observer class (that implements an observer pattern) , a transaction manager class and a parking lot class(subject to the observer). Use the class diagram and java class to implement it. You should use an observer pattern to implement your code.The main goal is to implement the following - Once a car enters (in an entry-scan only lot) or leaves (in an entry-scan and exit-scan lot), then the ParkingObserver will be updated, and then can register the charge with the parking system via the TransactionManager’s park() methodQ2: Write the Java code corresponding to the following UML diagram. Then, create two objects from the main method and print their areas and perimeters. Polygon {abstract} # color: String # numberOfSides: int + Shape() + Shape(color:String, numberOfSides:int) + getColor(): String + setColor(color:String): void + getNumberOfSides(): int + setNumberOfSides(sides:int): +abstract getArea(): double +abstract getPerimeter(): double Triangle - sides: int[ ] + Triangle(color:String, numberOfSides:int) + addSide(index:int, sideValue: int): void + getSide(index:int): int + getArea(): double + getPerimeter(): doubleJava: ShowStudent.java: class ShowStudent { public static void main (String args[]) { Student pupil = new Student(); pupil.setIdNumber(234); pupil.setPoints(47); pupil.setHours(15); pupil.showIdNumber(); pupil.showPoints(); pupil.showHours(); System.out.println("The grade point average is " + pupil.getGradePoint()); } } ShowStudent2.java: class ShowStudent2 { public static void main (String args[]) { Student pupil = new Student(); pupil.showIdNumber(); pupil.showPoints(); pupil.showHours(); System.out.println("The grade point average is " + pupil.getGradePoint()); } } Student.java: class Student { // the private data members private int idNumber; private int hours; private int points; // Constructor added in part c Student() { } // end of constructor added in part c // the public get and set methods public void…
- 50 public void setColor(String color) { } 51 52 이 ㅎ @0verride public boolean equals(Object o) { if ( o instanceof ColoredPoint ) { ColoredPoint p = (ColoredPoint)o; 53 54 55 return x == p.x && y == p.y && color p.color; 56 57 else 58 return false; 59 60 // if we override equals() we have to override hashCode() @0verride public int hashCode() { return Objects.hash(x, y, color); } 61 62 of E 65 66 /* tostring method Input: 67 68 69 None 70 Ουtρut : 71 String: (x,y,color) (No spaces) */ @0verride public String toString() { SYOUR CODE HERE> 72 73 of e 74 75 76 public static void main(String[] args) { ColoredPointp = new ColoredPoint( x: 2, y: 3, color: "red"); System.out.println("p = " + p); /* create point q using getlocation() */ Point q = p.getLocation(); /* q and p will have the same co-ordinates, but q has no color */ System.out.println("q="+q); System.out.println("p equal to q? " + p.equals(q)); ColoredPoint g2 = new ColoredPoint(q, color: "red"); System.out.println("q2="+g2);…Must be in JAVA. Please show in simplest form and with comments. The correct UML Diagram MUST be provided as well with the solution. public class Card{ int faceValue; int suit; Card(){ this.faceValue = 9; this.suit = 1; } Card(int f,int s){ this.faceValue = f; this.suit = s; } String getfaceValue(){ if(this.faceValue==1) return "Ace"; else if(this.faceValue==2) return "Two"; else if(this.faceValue==3) return "Three"; else if(this.faceValue==4) return "Four"; else if(this.faceValue==5) return "Five"; else if(this.faceValue==6) return "Six"; else if(this.faceValue==7) return "Seven"; else if(this.faceValue==8) return "Eight"; else if(this.faceValue==9) return "Nine"; else if(this.faceValue==10) return "Ten"; else if(this.faceValue==11) return "Jack"; else if(this.faceValue==12) return "Queen";…Create a UML class diagram of the application illustrating class hierarchy, collaboration, and the content of each class. There is only one class. There is a main method that calls four methods. I am not sure if I made the UML Class diagram correct. import java.util.Random; // import Random packageimport java.util.Scanner; // import Scanner Package public class SortArray{ // class name public static void main(String[] args) { //main method Scanner scanner = new Scanner(System.in); // creates object of the Scanner classint[] array = initializeArray(scanner); System.out.print("Array of randomly generated values: ");displayArray(array); // Prints unsorted array sortDescending(array); // sort the array in descending orderSystem.out.print("Values in desending order: ");displayArray(array); // prints the sorted array, should be in descending ordersortAscending(array); // sort the array in ascending orderSystem.out.print("Values in asending order: ");displayArray(array); // prints the…
- 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 =…Create a program that will implement the diagram below:Productprivate:string productName;double unitPrice;int noOfItems;public:void setValues(string n, double u, int i);string getProdName();int getNoOfItems();double computePrice();Product();The constructor will put initial values:• productName="noname”• unitPrice = 1.0• noOfItems = 1Accept 3 product records and output the details. Implement arrays of objectSAMPLE OUTPUT:Product 1:Enter product name: bawangEnter unit price: 2.5Enter no of items: 3Product 2:Enter product name: kalamansiEnter unit price: 1.5Enter no of items: 4Bawang cost 7.5 pesos4 kalamansi cost 6 pesosplease help me with this error problem in java: import java.util.Arrays; import java.util.Scanner; import Project1.Employee; public class Payroll { privateStringfirstName; privateStringlastName; privateintemployeeNumber; privateEmployee[]employees; privateintemployeeCount; // Constructors publicStringgetLastName(){ returnlastName; } publicPayroll(){ employees=newEmployee[100]; employeeCount=0; } publicstaticvoidmain(String[]args){ Payrollpayroll=newPayroll(); payroll.run(); } publicvoidrun(){ Scannerkeyboard=newScanner(System.in); while(true){ System.out.println("Welcome to the Payroll System." +"Choose one of the following opions from 1-5:\n"); System.out.print("1) Create an employee\n" +"2)Search for an employee by last name\n" +"3)Display an employee by employee number\n" +"4)Run payroll\n" +"5)Quit\n"); intChoice=keyboard.nextInt(); keyboard.nextLine(); if(Choice==1){ createEmployee(); }elseif(Choice==2){ searchEmployee(); }elseif(Choice==3){…
- Java 2 billBook -invoiceNumber: String-visitDate: String-patientName: String-paid: boolean -bills: bill[]-doctor: String +bill(all parameters)+Setters/getters methods(ifneeded)+printInvoice(): void +billBook(doctor:String,capacity:int)+Setters/getters methods (if needed)+addBills(): void+payBill(invoiceNumber: String): int Implement the class bill:a. Write the constructor that takes as parameters all data fields except the paid value. Abill object is by defauld not paid.b. The printInvoice() method should output the following information: The invoiceNumber, the visitDate, the name of the patient name A message “The bill is paid” or “The bill is not paid” according to the value of the field paid.2. Implement the class billBook using the above UML:a. Write the constructor that takes as parameters the name of the doctor who hasexamined the patient and the capacity which represents the size of the array bills.b. Write the method addBills that reads the information of bill objects from…Design ADT for a cave and a cave system. An archeologist should be able to add a newly discovered cave to a cave system and to connect two caves together by a tunnel. Duplicate caves—based on GPS coordinates—are not permitted. Archeologists should also be able to list the caves in a given cave system. Specify each ADT operation by stating its purpose, describing its parameters, and writing a pseudocode version of its header. Then Java interface for a cave's methods and one for the methods of a cave system. Include javadoc-style comments in your code. Java programPlease help me fix this java code which is supposed to be a Pac-Man game Java program is below import java.awt.*; import javax.swing.JFrame.*; public class ManyPacMans extends JFrame { public void paint(Graphics g) { g.drawghostShape(60,30,40); setBackground(Color.BLUE); g.fillghostShape(130, 30,100, 80); g.drawghostShape(60,30,40); setBackground(Color.PINK); g.fillghostShape(130, 30,100, 80); g.drawghostShape(60,30,40); setBackground(Color.RED); g.fillghostShape(130, 30,100, 80); g.drawOvalpacman(30,130,50, 60); setForeground(Color.yellow); g.fillOval(130,130,50, 60); } public Ghost(String imgPath, int x, int y, int speed, boolean ip) { super(imgPath, new int[] {0,0}, GHOST_WIDTH, GHOST_HEIGHT, GHOST_FRAMERATE, x, y); super.addFramesForAnimation("scatter", "ghost_scatter.png", 0, 0, 22,0); super.speed = speed; startX = x; startY = y; scoreValue = 200; } public ManyPacMans() { initUI(); } private void initUI() { add(new…