public class MyListTestCase { // ... private MyList aList; private String anElement; public void setUp() { aList = new MyList(); anElement = } "a string"; } @Test public void add() { aList.add(anElement); assertTrue(aList.size() == 1); assertTrue(aList.contains(anElement)); } @Test public void remove() { aList.add(anElement); aList.remove(anElement); assertTrue(aList.size() == 0); assertFalse (aList.contains(anElement));
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Which one is NOT true about the following code?
The setUp() method tests if it creates properly aList and anElement.
The remove() method tests if the remove() method in the adaptee removes properly anElement from aList.
The add() method tests if the add() method in the adaptee adds properly anElement to aList.
The add() method tests if the add() method in the adaptee increases the size of aList by 1 when anElement is added to aList.
The remove() method tests if the remove() method in the adaptee decreases the size of aList by 1 when anElement is removed from aList.
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- (Implement MyLinkedList) The implementations of the methods contains(E e), get(int index), indexOf(E e), lastIndexOf(E e), and set(int index, E e) are omitted in the MyLinkedList class. Implement these methods. Define a new class named MyLinkedListExtra that extends MyLinkedListto override these methods. Test your new MyList class using the code at import java.util.*; public class Exercise24_02 { public static void main(String[] args) { new Exercise24_02(); } public Exercise24_02() { String[] names = {"Tom", "Susan", "Kim", "George", "Peter", "Jean", "George", "Jane", "Denise", "Jenny", "Susan", "Kathy", "Jane"}; MyList<String> list = new MyLinkedListExtra<>(names); System.out.println(list); Scanner input = new Scanner(System.in); System.out.print("Enter a name: "); String name = input.next(); System.out.print("Enter an index: "); int index = input.nextInt(); System.out.println(name + " is in the list? " +…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 }}Refactore UIMenuBuilder/UIFormBuilder to remove redundant and copied code. public final class UIFormBuilder {private final List<Pair> _menu = new ArrayList<Pair>();public void add(String prompt, UIFormTest test) {_menu.add(new Pair<String, UIFormTest>(prompt, test));}public UIForm toUIForm(String heading) {if (null == heading)throw new IllegalArgumentException();if (_menu.size() < 1)throw new IllegalStateException();Pair[] array = new Pair[_menu.size()];for (int i = 0; i < _menu.size(); i++)array[i] = _menu.get(i);return new UIForm(heading, array);}} public class UIMenuBuilder { private final List<Pair<String,UIMenuAction>> _menu; public UIMenuBuilder() { _menu = new ArrayList<Pair<String,UIMenuAction>>(); } public UIMenu toUIMenu(String heading) { if (null == heading) throw new IllegalArgumentException(); if (_menu.size() <= 1) throw new IllegalStateException();…
- public class ShoppingListDriver{ public static void main(String[] args){ ShoppingList sl=new ShoppingList(3);sl.insert(null);sl.insert(new Item("Bread", "Carb Food", 2, 2.99));sl.insert(new Item("Seafood","Sea Food", -1, 10.99));sl.insert(new Item("Rice", "Carb Food",2, 19.99));sl.insert(new Item("Salad Dressings","Dessing", 2, 19.99));sl.insert(new Item("Eggs", "Protein",2, 3.99));sl.insert(new Item("Cheese","Protein", 2, 1.59));sl.insert(new Item("Eggs", "Protein",3, 3.99));sl.printNames();sl.print(); System.out.println("After removing Eggs:");sl.remove(new Item("Eggs","Protein",0,0));sl.printNames();sl.print(); }}Read all of the directions in the attached picture AnsweAnyPartYouCan UseAll8ClassesBelowToStartThis package cs232.RPNCalc; import java.util.ArrayList; public interface RPNStringTokenizer { public static ArrayList<String> tokenize (String expression) { // take a string. If it is valid RPN stuff - integers or operators // - then put them in a list for processing. // anything bad (not int or one of the operators we like) and return a null. // YOU WRITE THIS! return null; }} package cs232.RPNCalc; import java.util.ArrayList; public class RPNTester { public static void main(String[] args) { // don't change this method! YourRPNCalculator calc = new YourRPNCalculator(new YourArrayListStack()); System.out.println("Testing ArrayList version"); testRPNCalculator(calc); calc = new YourRPNCalculator(new YourLinkedListStack()); System.out.println("Testing LinkedList version");…code: public class PasswordGeneratorAndStorage {/*** Adds an application to the applications ArrayList. If index is -1, add application* to the end of applications. Else is index is within the size of applications, add* application at that index in applications. Otherwise, return. However, if applications * or application is null, return.* * @param applications* @param application* @param index*/public static void addApplication(ArrayList<String> applications, String application, int index) {// TODO: FILL IN BODY}/*** Generates a random password of length passwordLength and adds it to the end of* passwords if index is -1, or adds it to the index of passwords if index is within the* size of passwords (similar to how the addApplication adds an application). To generate* the random password, use rand to generate a random int within the size of characters. You* can then use this int to grab the char at that index in characters and concatenate that* to your String password variable.…
- import java.util.ArrayList; public class Bus { privateStringname; privateintsize; privateintbasePrice; privateArrayList<Trip>approvedTrips; privateintlevel;// 1,2,3 for low,medium, high repectively; privateintid; privatestaticintnextId=0; privateMinistrymny; protectedStringtripTypes; privateintgetNextId(){ returnnextId++; } publicBus(){ approvedTrips=newArrayList<Trip>(); } publicBus(Stringname,intsize,intbasePrice,intlev,Ministrymny){ approvedTrips=newArrayList<Trip>(); this.name=name; this.size=size; this.basePrice=basePrice; this.level=lev; this.id=getNextId(); this.mny=mny; tripTypes="BASICTRANSPORT"; } publicbooleanavailable(Datedate){ booleanretval=true; for(Tript:approvedTrips) if(t.getDate().getDay()==date.getDay()) retval=false; returnretval; } publicintgetBasePrice(){ returnbasePrice; } publicintgetId(){ returnid; } publicStringgetName(){ returnname; } publicdoublegetSize(){ returnsize; } publicStringtoString(){ returnname; }…Complete the following method that uses a loop to removes all strings with length less than four from its parameter words. import java.util.Iterator;import java.util.LinkedList; public class Lists{ public static void removeShort(LinkedList<String> words) { Iterator<String> iter = words.iterator(); /* Your code goes here */ }}public class LinkedList3 {private Node head = null;public class Node {char data;Node next;Node(char c) {data = c;}} build these 3 methods in java language public int countOccurencesOf(char c) {int count = 0;return count;} public char getLast() { } public void deleteLast() {}
- A linked list is built in this lab. Make sure to keep track of the head node. ContactNode.java - Class definition ContactList.java - Contains main() method (2) Build the ContactNode class per the following specifications: Private fields String contactName String contactPhoneNumber ContactNode nextNodePtr Constructor with parameters for name followed by phone number Public member methods getName() - Accessor getPhoneNumber() - Accessor insertAfter() getNext() - Accessor printContactNode() Ex: If the name is Roxanne Hughes and the phone number is 443-555-2864, printContactNode() outputs: Name: Roxanne Hughes Phone number: 443-555-2864 (3) Define main() to read the name and phone number for three contacts and output each contact. Create three ContactNodes and use the nodes to build a linked list. Ex: If the input is: Roxanne Hughes 443-555-2864 Juan Alberto Jr. 410-555-9385 Rachel Phillips 310-555-6610 the output is: Person 1: Roxanne Hughes, 443-555-2864 Person 2: Juan…Java. Refer to screenshot. There is starter code for this question. public class LinkedList {Node head;Node tail; protected class Node{String data;Node next;} public String removeFirst(){//Complete the implementation of removeFirst} public String toString(){ String result = ""; Node n = head;while(n != null){result += n.data + " -> ";n = n.next;} return result;} }import java.util.HashSet; import java.util.Set; // Define a class named LinearSearchSet public class LinearSearchSet { // Define a method named linearSearch that takes in a Set and an integer target // as parameters public static boolean linearSearch(Set<Integer> set, int target) { // Iterate over all elements in the Set for () { // Check if the current value is equal to the target if () { // If so, return true } } // If the target was not found, return false } // Define the main method public static void main(String[] args) { // Create a HashSet of integers and populate integer values Set<Integer> numbers = new HashSet<>(); // Define the target to search for numbers.add(3); numbers.add(6); numbers.add(2); numbers.add(9); numbers.add(11); // Call the linearSearch method with the set…