Breifly explain any implementation decisions and the reasoning behind those without writing the complete code
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Using the class diagram in the image below, there is a need to create Money, Parking Charge, and Parking Office classes for an object-oriented (java based) parking system, assuming the code will be written in java.
Breifly explain any implementation decisions and the reasoning behind those without writing the complete code
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- Computer Science You are required to develop a small chatting application where two or more friends can communicate each other through messages. Create a class Message which has Date d, and message (string). Provide getters/setters, constructors, toString. Create a class Friend having String name, String contact, email and ArrayList of Messages provide getters/setters, constructors, toString addMessage(Message m) method which will add new message to the list. Provide following options to the user using JFrame. Login which will help user login to the application. View Friends (Display List of All Friends) View Messages ( This should display all message of a Friend) Send message (This should ask for friend name and message match the friend name and write that message to the array list).JAVA – color: String – make: String – model: String – msrp: double + Car() + Car(color: String, make: String, model: String, msrp: double) + getColor() : String + setColor(color : String ) : void + getMake() : String + setMake(make: String ) : void + getModel() : String + setModel(model: String ) : void + getMsrp () : double + setMsrp(msrp: double) : void + toString(): String The Car class will have four attributes/instance variables/fields and 11 methods. CarDealership Class The CarDealership class will simulate a real life automotive dealership. This class will create 3 Car objects and store them in an array named Lot. The class will then display all of the information pertaining to each car (color, make, model, etc.) to the User and allow the User to select one to purchase. Once the User selects a car to purchase, the Car object should be removed from the array (Lot) and another Car object should be put in its place.Create Playlist.java, Song.java, and PlayMusic.java. Song.java: models a song object; must have these members (you can add more members if needed): String name; String artist String album int time static int numSongs; Song(String name, String artist, String album, int time){} getName(){} getArtist(){} getAlbum(){} getTime(){} Playlist.java: models a playlist using an array of Song objects; must hvae the following members (you can add more members if needed): String name; String creator; Song[] songs; final int CAPACITY=20; //max size of a playlist Playlist(String name, String creator){} getName(){} addSong(Song song){} removeSong(Song song){} getSongs(){} Private data fields: Public methods: PlayMusic.java: This class will be the main class used to create and use Playlist and Song. This class should: Ask user for A name for their playlist Ask user for Creator name Ask user for The number of songs they will add to the playlist (must be < CAPACITY) Ask user for all…
- import java.util.ArrayList; /** * This class describes a user of Twitter. A user has a user ID * (e.g. @testudo), a list of tweets, a count of the number of followers, * and a list of users that this user follows. Unlike P5, * there is no upper limit on the number of tweets or users to follow. * * You may NOT import any library class other than java.util.ArrayList. * You may NOT add any instance variables to keep a count of the number * of tweets or users being followed. You may add instance variables * for other purposes as long as they are private. */public class TwitterUser { private String userID; private int followers; private ArrayList<Tweet> listTweets; private ArrayList<TwitterUser> toFollow; /** * A constructor that takes the user's ID. If the ID is null, or * longer than 32 characters, or it does not start with "@", * throw an IllegalArgumentException. * * All other instance variables should be initialized…Create a Point classCreate a Point class as we did in the class. We'll use this to create Point objects that hold x,y coordinates of locations where we'll want to draw. Draw DotsWrite a drawDots(points) function that takes a list points as input and draws a dot on the drawing window for each Point. For example, you should be able to call your function as follows: >>> p = Point(10, 20) >>> q = Point(20, 30) >>> points = [p, q] >>> drawDots(points)Create a TeeShirt class for Toby's Company. Fields include: order Number - of type int , size - of type String , color - of type String.: Create set methods for the order number, size, and color and get methods for all four fields. The price is determined by the size, $22.99 for XXL or XXXL and $19.99 for all other sizes
- This Java code does not run, it has some errors and it needs a main method, please fix it. import java.io.*; class DecisionTree { /* NESTED CLASS */ private class BinTree { /* FIELDS */ private int nodeID;private String questOrAns = null;private BinTree yesBranch = null;private BinTree noBranch = null; /* CONSTRUCTOR */ public BinTree(int newNodeID, String newQuestAns) {nodeID = newNodeID;questOrAns = newQuestAns;}} /* OTHER FIELDS */ static BufferedReader keyboardInput = newBufferedReader(new InputStreamReader(System.in));BinTree rootNode = null; /* Default Constructor */ public DecisionTree() {} /* CREATE ROOT NODE */ public void createRoot(int newNodeID, String newQuestAns) {rootNode = new BinTree(newNodeID,newQuestAns);System.out.println("Created root node " + newNodeID);} /* ADD YES NODE */ public void addYesNode(int existingNodeID, int newNodeID, String newQuestAns) {// If no root node do nothing if (rootNode == null) {System.out.println("ERROR: No root node!");return;} // Search…Define a Student class, with 3 data fields: ID: string Name: string FavoriteThing: string Create an application that stores and outputs a list of the students' favorite things. Suppose each student only has one favorite thing.Implement the following functions in your class: getTotalWords, getUniqueWords, getMostUsedWord, getMaxOccurrence. Name them as indicated here. The last function returns how many times the most common word occurred. The code to add the functions to: import edu.princeton.cs.algs4.*;import edu.princeton.cs.algs4.LinearProbingHashST;import edu.princeton.cs.algs4.SeparateChainingHashST;import edu.princeton.cs.algs4.ST;import edu.princeton.cs.algs4.SequentialSearchST;import edu.princeton.cs.algs4.In;import edu.princeton.cs.algs4.StdOut; public class TestPerf { public static long LinearProbingHashST(String x[]) { LinearProbingHashST<String, Integer> st = new LinearProbingHashST<String, Integer>(); long start = System.currentTimeMillis(); for(int i = 0; i < x.length; i++){ String key = x[i]; if (!st.contains(key)) st.put(key, 1); else st.put(key, st.get(key) + 1);…
- // Declare data fields: a String named customerName, // an int named numItems, and // a double named totalCost.// Your code here... // Implement the default contructor.// Set the value of customerName to "no name"// and use zero for the other data fields.// Your code here... // Implement the overloaded constructor that// passes new values to all data fields.// Your code here... // Implement method getTotalCost to return the totalCost.// Your code here... // Implement method buyItem.//// Adds itemCost to the total cost and increments// (adds 1 to) the number of items in the cart.//// Parameter: a double itemCost indicating the cost of the item.public void buyItem(double itemCost){// Your code here... }// Implement method applyCoupon.//// Apply a coupon to the total cost of the cart.// - Normal coupon: the unit discount is subtracted ONCE// from the total cost.// - Bonus coupon: the unit discount is subtracted TWICE// from the total cost.// - HOWEVER, a bonus coupon only applies if the…package customstring; import static org.junit.jupiter.api.Assertions.assertEquals; import java.util.*; /*** In this assignment, you will implement a simple class called CustomString. This class represents a more customizable version * of a String, with additional attributes and methods. * For example, the CustomString class has a “reverse” method* capitalization is reversed (i.e., lowercase to uppercase and uppercase to lowercase) for the alphabetical characters specified * in the given arg. For CustomString “abc, XYZ; 123.”, calling reverse("bcdxyz@3210.") will return "aBC, xyz; 123.". * * The CustomString class also has a “remove” method which returns a new string version of the current string where the alphabetical * characters specified in the given arg, are removed. For CustomString "my lucky numbers are 6, 8, and 19.", calling remove("ra6") * will return "my lucky numbes e 6, 8, nd 19.".* */public class CustomString {//instance variables/*** Current string.*/String…Code in Java keep the code as simple as possible do not use arrays nor parseItnt StringBuilder etc keep it very simple. Class TextEdit In text editing class. Its constructor it receives a string. The string will be stored in a field called initialValue using proper setter methods and proper documentation for Each of the methods. This class also contains another String field called: ”mixedResult” which is only defined globally and will be initialized using a method in the future in the main class namely the mix method. The public String toToken() method is a method that will use the initialValue field and it for the letter ’p’ or the letter ’A’. If it finds the letter, every element on the left side of the found letter will be stored in another string and returned. Example: If the initialValue was: ”This is a possible resource allocation”. The returning String will be: ”possible resource allocation”. Use control statements here iterate through the string using a counter control…
