This is needed in Java Given an existing ArrayList named friendList, find the first index of a friend named Sasha and store it in a new variable named index.
Q: The input to this method is supposedly an ArrayList of integers that ranges from 1 to 100, however…
A: Java program to solve the given problem is below.
Q: A supermarket wants to reward its best customer of each day, showing the customer’s name on a screen…
A: Actually, Java is an Object Oriented Programming language which is platform independent and robust…
Q: java Write a method that returns the frequency of each characters of a given String parameters If…
A: // Java implementation to print the character and// its frequency in order of its occurrence public…
Q: **/ enable all the selectors that are still available in the scoresheet */ public void…
A: Here, we are going to build the methods to enable and disable the selectors for scores. Enable…
Q: You are familiar with ArrayList and have used it in different capacities. The most prominent feature…
A: We will solve the given problem in Java language.
Q: Add a method (call it spotterAnimalArea) to AnimalLab that takes two parameters — animalType and…
A: I have written code in java. and i have attached bellow you can see . but this code is not full only…
Q: Suppose aList is an object of the class ArrayList<String> that contains the four strings:…
A: GIVEN: Suppose an aList is an object of the class ArrayList<String> that contains the four…
Q: Make a String ArrayList.Then write a Java method that swaps the first and last elements. Systemprint…
A: I give the code in Java along with output and code screenshot
Q: An airport has a runway for airplanes landing and taking off. When the runway is busy, airplanes…
A: Code: package Airport;import java.util.ArrayList;import java.util.LinkedList;import…
Q: Need help with the parts that say TODO in images , This may be needed scoresheet code below package…
A: Comments are lines of text in code that start with a specific set of characters like “//” in…
Q: In java, i want to use forkjoin platform to execute 5 ArrayList to make it load faster
A: import java.io.*;import java.util.Iterator;import java.util.concurrent.CopyOnWriteArrayList; class…
Q: What are wrapper classes and why are they useful for ArrayLists? Include examples of autoboxing and…
A: A Wrapper class may be a class whose object wraps or contains primitive data types. When we create…
Q: 2. The class PetShop has a single field as defined below: private ArrayList petList; Define a…
A: Given that petList is an ArrayList that stores cat details. private ArrayList petList can be…
Q: • Write a class Filter with a method called filterNumber that accepts an ArrayList of integers and…
A: logic:- create a class Filter and define a method filterNumber which takes ArrayList of integers.…
Q: If a method given an ArrayList as a parameter calls a second method giving it the same ArrayList,…
A: The answer is given below.
Q: hat is the best way to remove duplicates from an ArrayList?
A: What is the best way to remove duplicates from an ArrayList?
Q: Complete the Course class by implementing the printRoster() method, which outputs a list of all…
A: To implement the required printRoster( ) function, the following 2 steps are to be taken:- Iterate…
Q: Make the following class generic so that it can deal with an arbitrary class rather than only Dog…
A: Given: Make the following class generic so that it can deal with an arbitrary class rather than…
Q: rite a program in the Java language that includes: 1. A class for books, taking into account the…
A: The problem will need a java prorgam where a class to store the book details and a list to store the…
Q: What are the major differences between a list and a set in Java? How can you determine when to…
A: Below are the answers:
Q: Given part of the ArrayStack class Java code, implement its pop) operation in Java based on the data…
A: Java program to implement pop () operation in array stack
Q: Write a program in Java that performs the following tasks: Create an ArrayList, HashMap and HashSet…
A: Write the java code using the below steps: Declare an object of an ArrayList. Use the add method to…
Q: Implement the interface DictionaryInterface to create a class of glossaries. A glossary is a…
A: //Here we are Defining a package package test3; //Here we are import util library import…
Q: Besides the ArrayList class in Java, do you think there are other classes that are implemented with…
A: Other classes that are implemented with an array :-
Q: Create an arraylist in Java of 10 students. Use the following methods: add, remove, insert, size,…
A: Introduction of the ArrayList: ArrayList in java is an array that size can be change so ArrayList is…
Q: Someone suggests that ArrayList should be a subclass of ArrayBag and LinkedList should be a subclass…
A: The question is discuss the advantages and disadvantages of ArrayBag and LinkedBag.
Q: Write a declaration of a local variable called cs101 that can hold an ArrayList of Student.
A: ArrayList is a part of collection framework and is present in . It provides us dynamic arrays in…
Q: Which of the following is the parent class for java,util.ArrayList? O java.util.AbstractList O…
A: 1st Ans. java.util.AbstractList java.util.AbstractList is the parent of java.util.ArrayList. Because…
Q: In your workshop project create a new Java class (BasicArrayList) and convert the above code to work…
A: Answer: Java Source Code: import java.util.ArrayList; public class Main{ public static void…
Q: Java question Use the Iterator Pattern: Create a class called Exercise, and then, in its main…
A: Java code and Output:
Q: A method needs to be written called chooseAccount, which takes an ArrayList and an Account object.…
A: Given that the main class is Account ArrayList<Account> accounts can not store objects of…
Q: Write a Java Program to do the following: Create an LinkedList object and store 5 different Integer…
A: Given question has asked to create an linked list object and store 5 different integer object. using…
Q: be adding all the cards
A: public class Card { private String mySuit; private int myValue; public Card(…
Q: What is the difference in the result of returning the words in a HashSet compared with returning…
A: HashSet and ArrayList are some of the most important classes of the Java Collection framework.…
Q: Make the following class generic so that it can deal with an arbitrary class rather than only Dog…
A: Java program to solve the given problem is below.
Q: The above "myList" is an ArrayList in Java program. 2. If I want to remove "Awful" from myList,…
A: Consider the given list :
Q: Write a Java class Course for dealing with courses. Your class must have the following features:…
A: Program Approach: 1- As per the assignment requirement, create all the classes as mentioned in the…
Q: Given part or the ArrayStack class Javà code, implement its popO operation Java based on the data…
A: The given problem is to be solved in Java where the interface is implemented in ArrayStack and need…
Q: an u teach me how to get the longest string from an arraylist using iterator? U may provide an…
A: A java program will be taken and can be used to find the longest string in the array list by using…
Q: Are there other predefined Java classes that are implemented with an array besides ArrayList class…
A: Step 1:- The array is defined as a collection of similar types of data. For example:- int a[]=new…
Q: Implement a Menu-Driven program of ArrayList class using the above scenario and perform the…
A: Answer
Q: Write a declaration of a private field named library that can hold an ArrayList. The elements of the…
A: Answer: private ArrayList<Book> library = new ArrayList<Book>();
Q: Write a method called removeBelow in the class StackApplication that accepts two parameters called…
A: import java.util.*;import java.util.Arrays;class StackApplication { void removeBelow(int a,int…
Q: Consider a class Student that has an attribute age and a method getAge(): StudentList is a class…
A: Here is the code and output
This is needed in Java
Given an existing ArrayList named friendList, find the first index of a friend named Sasha and store it in a new variable named index.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 1 images
- Write code that creates an ArrayList that can hold String objects. Add the names of three cars to the ArrayList, and then display the contents of the ArrayList.Define a class called Book. This class should store attributes such as the title, ISBN number, author, edition, publisher, and year of publication. Provide get/set methods in this class to access these attributes. Define a class called Bookshelf, which contains the main method. This class should create a few book objects with distinct names and store them in an ArrayList. This class should then list the names of all books in the ArrayList. Enhance the program by providing a sort function, which will sort the books in ascending order of their year of publication. Create a few more Bookobjects with the same names but with different edition numbers, ISBNs, and years of publication. Add these new Book objects to the ArrayList, and display the book list sorted by book name; for duplicate books of the same name, sort the list by year of publication. (Hint: You will need to define a comparator class that takes two Book objects as parameters of the compareTo This method should do a two-step…Q2 Create MusicOrganizer project using BlueJ . (i) Create a MusicOrganizer class and declare an ArrayList for storing the file names of music files into the String object. (ii) Create a constructor for the music organizer class and assign the field to the ArrayList. (iii) Write a method to add a file to the collection. (iv) Write a method to return the number of files in the collection. (v) Write a method to remove a file from the collection. (vi) Make a screen shot of the coding and output.
- This program is going to maintain a list of customers’ names and bank account balances. 1. Create a class called CustomerList with a main method that instantiates an ArrayList of String objects called customerName. Invoke the add method to add the following names into the ArrayList: Cathy Ben Jorge Wanda Freddie 1. Print each name in the ArrayList using a for a loop. 2. Create another ArrayList object called customerBalance, to save users’ balance. What is the type of this ArrayList? double or Double? You just need to declare this ArrayList and leave it empty for now. 3. For each customer, print the name and ask the user to enter the initial balance for this customer. Save the initial balance into ArrayList customerBalance. Use a loop to get this done for all 5 customers. The program should print out this for the first customer: Example: Please enter the account balance for Cathy: (waiting for user’s input …) Code: for(int i=0; i<5;i++) { Print(“Please enter the account balance…Create a file named StudentArrayList.java, within the file create a class named StudentArrayList. This class is meant to mimic the ArrayList data structure. It will hold an ordered list of items. This list should have a variable size, meaning an arbitrary number of items may be added to the list. Most importantly this class should implement the interface SimpleArrayList provided. Feel free to add as many other functions and methods as needed to your class to accomplish this task. In other words, the class StudentArrayList must implement the interface SimpleArrayList. You have to write the code for each of the functions specified in the SimpleArrayList interface. Make sure the class that implements SimpleArrayList is named "StudentArrayList" or else the test code will not compile. All of the documentation for the function guidelines may be found in the interface. This assignment can be a lot of programming if you do not follow the DRY (Don't Repeat Yourself) programming principle.…Urgent Requirement: There will one question related to ArrayList class similar to the following question. The following driver has created a an ArrayList of Point objects. write a method that moves all the points with the value of x greater than its value of y to the end of the list. .
- This program is going to maintain a list of customers’ names and bank account balances. Create a class called CustomerList with a main method that instantiates an ArrayList of String objects called customerName. Invoke the add method to add the following names into the ArrayList: Cathy Ben Jorge Wanda Freddie 2. Print each name in the ArrayList using a for loop. 3. Create another ArrayList object called customerBalance, to save users’ balance. What is the type of this ArrayList? double or Double? You just need to declare this ArrayList and leave it empty for now. 4. For each customer, print the name and ask the user to enter the initial balance for this customer. Save the initial balance into ArrayList customerBalance. Use a loop to get this done for all 5 customers. For example, the program should print out this for the first customer: Please enter the account balance for Cathy: (waiting for user’s input …) Code skeleton: for(int i=0; i<5;i++) { Print(“Please enter…Q8. Write a declaration of a private field named department that can hold an ArrayList. The elements of the ArrayList are of type Student. Write an assignment to the department variable to create an appropriate ArrayList object. Q9. (A) If a collection stores 20 objects, what value would be returned from a call to its size method? (B) Write a method call using get to return the fifth object stored in a collection called department. Q10. Write a method call to add the object held in the variable student1 to a collection department files.This lab was designed to reinforce programming concepts from this lab, you will practice: Declaring and initializing ArrayList. Add elements to the Arraylist. Display the content of the ArrayList. Write a class name PhoneBookEntry that has fields for a person’s name and phone number. The class should have a constructor and the appropriate accessor and mutator methods. Then write a program that creates at least 5 PhoneBookEntry objects and stores them in an ArrayList. Use a loop to display the contents of each object in the ArrayList.
- java Write a program to do the following: Create an ArrayList of Student. Add 7 elements to the ArrayList. Use for each loop to print all the elements of an ArrayList. Remove an element from an ArrayList using the index number. Remove the element from an ArrayList using the content (element name).Create a new class, called ConstantList that stores a "constant" list of integers (ints). Once created the list is fixed (none of the items can be changed, no items can be added or removed, the order is fixed). Use an array to store your list. Your class will have a single constructor that takes an array of ints as input that will be used to specify the constant list. You must provide appropriate methods to give the user of your class access to the list elements. A user should be able to access individual elements (by position) and the entire list of numbers. Your class must use encapsulation. Explain how your solutions solves the problem. That is, explain why your ConstantList really is a constant list of numbers.In this programming challenge, you will create a simple trivia game for two players. The program will work like this: • Read the contents of the trivia.txt file into an ArrayList . • Starting with player 1, each player gets a turn at answering one trivia question. (For instance, if there are 10 questions, 5 for each player.) When a question is displayed, four possible answers are also displayed. Only one of the answers is correct, and if the player selects the correct answer, he or she earns a point. • After answers have been selected for all of the questions, the program displays the number of points earned by each player and declares the player with the highest number of points the winner, same as the sample execution. You are to design a Question class to hold the data for a trivia question. The Question class should have String fields for the following data: • A trivia question • Possible answer 1 • Possible answer 2 • Possible answer 3 • Possible answer 4 • The number of the…