write my assignment 30995

Main Program:import java.util.Scanner;public class ReadingMainExtNew { static ReadingExtNew[] readings = new ReadingExtNew[50]; static int numOfReadings = 0; public static void main(String args[]) {  bulkAdd();// to call reading method and display the menu in console } // this method is for add reading to the readings array private static void bulkAdd() {  String annotation = null;  int readingId = 0;  double value = 0;  ReadingExtNew reading;  boolean valid = false;  Scanner in = new Scanner(System.in);  while (!valid) {   System.out.println("Enter annotation: ");   annotation = in.next();   valid = annotation.length() >= 15;   if (!valid) {    System.out.println("Please enter annotation with minimum 15 characters");   }  }  valid = false;  while (!valid) {   try {    System.out.println("Enter reading Id: ");    readingId = in.nextInt();    valid = true;   } catch (Exception e) {    System.out.println("please enter number");    in.next();   }  }  valid = false;  while (!valid) {   try {    System.out.println("Enter value: ");    value = in.nextDouble();    valid = true;   } catch (Exception e) {    System.out.println("please enter number");    in.next();   }  }  reading = new ReadingExtNew(annotation, readingId, value);  readings[numOfReadings] = reading;  numOfReadings++;  System.out.println(reading);  addMenu(); } // this is method is for calculate average value of all readings in readings // array private static void averageReading(ReadingExtNew[] readings, int numOfReadings) {  double sum = 0.0;  double avg = 0.0;  for (int i = 0; i < numOfReadings; i++) {   ReadingExtNew reading = readings[i];   sum = sum + reading.getValue();   if (numOfReadings > 0) {    avg = sum / numOfReadings; // to calculate average value of readings   }  }  System.out.println("avg  " + avg);  menu(); }// this method is for display all records in readings Array private static void displayAllReadings() {  for (int i = 0; i < numOfReadings; i++) {   ReadingExtNew reading = readings[i];   System.out.println(reading);  }  menu(); } // this method is for display all the Reading records in readings array private static void displayLargestReading() {  int largestReadingIndex = 0;  ReadingExtNew largestReading = null;  for (int i = 0; i < numOfReadings; i++) {   largestReading = readings[largestReadingIndex];   if (readings[i].getValue() > largestReading.getValue()) {    largestReadingIndex = i;   }  }  largestReading = readings[largestReadingIndex];  System.out.println(largestReading);  menu(); } private static void addMenu() {  System.out.println("");  boolean valid = false;  int option = 0;  Scanner in = new Scanner(System.in); // to read user entered data from console  System.out.println("MENU SELECTION");  System.out.println("Options:");  System.out.println("1. Add another reading");  System.out.println("2. Menu");  System.out.println("3. Quit");  System.out.println("");  while (!valid) { // validate the user input   try {    System.out.println("Enter Selection: ");    option = in.nextInt(); // to read user entered Selection from console    valid = true;   } catch (Exception e) {    System.out.println("please enter number");    in.next();   }  }  // Switch construct  switch (option) {   case 1:    bulkAdd(); // to call addReading method    break;   case 2:    menu();    break;   case 3:    System.out.println("Exit");    in.close();    System.exit(0); // to exit from menu    break;   default:    System.out.println("Invalid selection");    menu();    break;  }  System.out.println("n n"); } // this method is for display menu and based on menu selection it will give call // the methods to add,display,and calculate average of all records and show the // Reading with highest value private static void menu() {  System.out.println("");  boolean valid = false;  int option = 0;  Scanner in = new Scanner(System.in); // to read user entered data from console  System.out.println("MENU SELECTION");  System.out.println("Options:");  System.out.println("1. Add another reading");  System.out.println("2. Display all readings");  System.out.println("3. Display average reading");  System.out.println("4. Display largest reading");  System.out.println("5. Quit");  System.out.println("");  while (!valid) { // validate the user input   try {    System.out.println("Enter Selection: ");    option = in.nextInt(); // to read user entered Selection from console    valid = true;   } catch (Exception e) {    System.out.println("please enter number");    in.next();   }  }  // Switch construct  switch (option) {   case 1:    bulkAdd(); // to call addReading method    break;   case 2:    if (numOfReadings == 0) { // to check weather array has records    System.out.println("No Readings Found,Please enter readings first");    menu();   } else {    displayAllReadings(); // to call displayAllReadings method   }   break;   case 3:    if (numOfReadings == 0) {    System.out.println("No Readings Found,Please enter readings first");    menu();   } else {    averageReading(readings, numOfReadings); // to call averageReading method   }   break;   case 4:    if (numOfReadings == 0) {    System.out.println("No Readings Found,Please enter readings first");   } else {    displayLargestReading(); // to call displayLargestReading method   }   break;   case 5:    System.out.println("Exit");    in.close();    System.exit(0); // to exit from menu    break;   default:    System.out.println("Invalid selection");    menu();    break;  }  System.out.println("n n"); }}Data Type Program:public class ReadingExtNew { private String annotation; private int readingId; private double value; public ReadingExtNew(String annotation, int readingId, double value) { super(); this.annotation = annotation; this.readingId = readingId; this.value = value; } public String getAnnotation() { return annotation; } public void setAnnotation(String annotation) { this.annotation = annotation; } public int getReadingId() { return readingId; } public void setReadingId(int readingId) { this.readingId = readingId; } public double getValue() { return value; } public void setValue(double value) { this.value = value; } @Override public String toString() { String check = readingId == 0 ? " check sensor" : readingId > 100 ? "check reading" : ""; return "#" + readingId + " : " + value + " (" + annotation + ") " + check; }} if you could explain the structure chart