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- Create a Java program that will store 10 student objects in an ArrayList, ArrayList<Student>. A student object consists of the following fields: int rollno String name String address Implement two comparator classes to sort student objects by name and by rollno (roll number). Implement your own selection sort method. *Does the program below meet the above requirements? Can the program be made anymore effecient? Is there any improvements that could be made? (modularity, organization, etc..) If so what would they be/look like? I could also use some help with comments to explain the programs functionality.* Please and thank you! Source code: import java.util.ArrayList;import java.util.Comparator;import javax.swing.JFrame;import javax.swing.JPanel;import javax.swing.JTextArea; class Student { int rollno; String name; String address; public Student(int roll, String name, String add) { super(); this.rollno = roll; this.name = name;…Is there a particular reason why I do not get the right answer after I choose my option? Entering student ID ( that was previously entered ) and then displayed something different? This is the code : import java.util.ArrayList;import java.util.Iterator;import java.util.Scanner;class UniversityPersonnelManagement {public static void main(String[] args) {ArrayList<Student> studentList= new ArrayList<Student>();ArrayList<Faculty> facultyList= new ArrayList<Faculty>();System.out.println("Welcome to my Personal Management Program");for(;;){int input=0;System.out.println(" Choose one of the options:");System.out.println("1- Add a new Faculty member");System.out.println("2- Add a new Student");System.out.println("3- Print tuition invoice for a student");System.out.println("4- Print information of a faculty");System.out.println("5- Exit Program");System.out.print(" Enter your selection: ");Scanner s=new Scanner(System.in);try{input=s.nextInt();}catch (Exception e)…Describe the sleep() method's purpose and operation.
- Make sure each program has at least one method in addition to its driver method(main). Or use one driver main method and write method(s) for each of the program. Write a Java program to find the mode of an array of integer numbers. Use a nested loop for implementation. Using Java inbuilt classes and method to effortlessly solve this will attract a zero point.Each recursion causes a new activation frame to be placed on the stack.true of false?import java.util.Scanner;import java.util.ArrayList;import java.util.StringTokenizer; public class PlantArrayListExample { // TODO: Define a printArrayList method that prints an ArrayList of plant (or flower) objects public static void main(String[] args) { Scanner scnr = new Scanner(System.in); String input; // TODO: Declare an ArrayList called myGarden that can hold object of type plant // TODO: Declare variables - plantName, plantCost, flowerName, flowerCost, colorOfFlowers, isAnnual input = scnr.next(); while(!input.equals("-1")){ // TODO: Check if input is a plant or flower // Store as a plant object or flower object // Add to the ArrayList myGarden input = scnr.next(); } // TODO: Call the method printArrayList to print myGarden }}
- import static org.junit.jupiter.api.Assertions.assertEquals; import java.util.Set; import static java.util.stream.Collectors.toSet; /** * 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 which returns a new string version of the current string where the * 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…Complete the method void addFirst(T item). It adds an item of type T to the front of the deque. It must not use any loops or recursion. Each operation must take constant time, that is, it does not depend on the deque's size. Additionally, if the item is null, instead of adding it into the deque, reject and throw an illegal argument exception. Here's the skeleton code // EXERCISE 6.2 ADD NOT NULL TO FRONT /** * Adds an non-null item of type T to the front of the deque. * @param item is a type T object. @throws IllegalArgumentException if the item is null. */ public void addFirst(T item) { }java
- Create the Singly Linked List after having executed the following methods. Each item must have a headand tailreference. Whenever a method is not expected or invalid, write Exception. Only the process not the code •addTail("Bungee")•addTail("Yeti")•addTail("Screendoor")•addTail("Ladder")•removeHead()•addHead("Flag")•addHead("Ducky Tube")•addHead("Snorkel")Answer it in java languageFile TesSLL.java contains a driver that allows you to experiment with these methods. Compile and run TestSLL, and play around with it to see how it works. Then add the following methods to the SinglyLinkedList class. For each, add an option to the driver to test it. Do this in incremental steps!! This means, implement and test the methods one at a time.
