Starting Out with Java: From Control Structures through Data Structures (4th Edition) (What's New in Computer Science)
4th Edition
ISBN: 9780134787961
Author: Tony Gaddis, Godfrey Muganda
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 17.1, Problem 17.2CP
When ArrayList is used as a non-generic class, why must you use the cast operator with the get method?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Write all the Members of the ArrayList Class?
Design a generic method 'sum' that accepts an array of any type such as int, double or float and this method will return the sum of all elements in the array. Create a test class and call 'sum twice by passing arrays of different types.
You are familiar with ArrayList and have used it in different capacities. The most prominent feature of ArrayList is that it expands automatically as elements are added to it. It can be traversed using a for loop, for each loop and iterator( which you have implemented in Lab 2).In this lab you are going to implement your own ArrayList and its functionalities.Task 1.1: Create a class Generic ArrayList with attributes.Task 1.2: Implement a constructor for your ArrayList class.Task 1.3: Implement add() method for adding elements to ArrayList. Remember, ArrayList adds elements dynamically. It doesn't depend on user defined size.Task 1.4: Implement remove() method for removing an element from a specific index. Remember, ArrayList stores elements in a consecutive sequence. If an element is removed from middle you have to re-adjust the elements in the correct sequence.
Note: Break down your implementation by defining helper methods for different tasks, rather than implementing your logic in a…
Chapter 17 Solutions
Starting Out with Java: From Control Structures through Data Structures (4th Edition) (What's New in Computer Science)
Ch. 17.1 - Prob. 17.1CPCh. 17.1 - When ArrayList is used as a non-generic class, why...Ch. 17.1 - Suppose we use the following statement to...Ch. 17.1 - Assume we have used the statement shown in...Ch. 17.2 - Prob. 17.5CPCh. 17.2 - Prob. 17.6CPCh. 17.2 - Prob. 17.7CPCh. 17.2 - Prob. 17.8CPCh. 17.3 - Prob. 17.9CPCh. 17.3 - Prob. 17.10CP
Ch. 17.3 - Prob. 17.11CPCh. 17.3 - Prob. 17.12CPCh. 17.3 - Prob. 17.13CPCh. 17.3 - Prob. 17.14CPCh. 17.4 - Prob. 17.15CPCh. 17.5 - Prob. 17.16CPCh. 17.5 - Prob. 17.17CPCh. 17.6 - Prob. 17.18CPCh. 17.6 - Prob. 17.19CPCh. 17.6 - Prob. 17.20CPCh. 17.8 - Prob. 17.21CPCh. 17.8 - Prob. 17.22CPCh. 17.9 - Prob. 17.23CPCh. 17.9 - During the process of erasure, when the compiler...Ch. 17.9 - Prob. 17.25CPCh. 17 - Prob. 1MCCh. 17 - Prob. 2MCCh. 17 - Look at the following method header: void...Ch. 17 - Look at the following method header: void...Ch. 17 - Look at the following method header: void...Ch. 17 - Look at the following method header: void...Ch. 17 - Prob. 7MCCh. 17 - Prob. 8MCCh. 17 - Prob. 9MCCh. 17 - The process used by the Java compiler to remove...Ch. 17 - True or False: It is better to discover an error...Ch. 17 - Prob. 12TFCh. 17 - True or False: Type parameters must be single...Ch. 17 - Prob. 14TFCh. 17 - Prob. 15TFCh. 17 - True or False: You cannot create an array of...Ch. 17 - Prob. 17TFCh. 17 - Prob. 18TFCh. 17 - Prob. 1FTECh. 17 - Assume the following is a method header in a...Ch. 17 - public class MyClassT { public static void...Ch. 17 - public class PointT extends Number super Integer {...Ch. 17 - Assume there is a class named Customer. Write a...Ch. 17 - Assume names references an object of the...Ch. 17 - Prob. 3AWCh. 17 - Prob. 4AWCh. 17 - Prob. 5AWCh. 17 - Prob. 6AWCh. 17 - Prob. 7AWCh. 17 - Prob. 1SACh. 17 - Look at the following method header: public T...Ch. 17 - Prob. 3SACh. 17 - Do generic types exist at the bytecode level?Ch. 17 - Prob. 5SACh. 17 - When the compiler encounters a class, interface,...Ch. 17 - Prob. 1PCCh. 17 - Prob. 2PCCh. 17 - Prob. 3PCCh. 17 - Prob. 4PCCh. 17 - Prob. 5PCCh. 17 - Prob. 6PCCh. 17 - Prob. 7PC
Additional Engineering Textbook Solutions
Find more solutions based on key concepts
Bundling together an objects data and procedures is called _______ .
Starting Out with C++: Early Objects
(Attributes of Hybrid Vehicles) In this chapter you learned the basics of classes. Now youll begin fleshing out...
Java How to Program, Early Objects (11th Edition) (Deitel: How to Program)
Look at the following statement: mystring = 'cookiesmilkfudgecakeice cream' Write a statement that splits this ...
Starting Out with Python (3rd Edition)
Describe a method that can be used to gather a piece of data such as the users age.
Web Development and Design Foundations with HTML5 (8th Edition)
Explain the difference between redundancy and diversity.
Software Engineering (10th Edition)
Today, CPUs are huge devices made of electrical and mechanical components such as vacuum tubes and switches.
Starting Out with Programming Logic and Design (4th Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Similar questions
- Create a class of type Generic so that it has a Get method that receive a list regardless of the type of this list. Print the list, remove the first and the last element in the list, reverse the list and finally print the list After modifications. Proposed methodologies:Generic Class. Technologies: - C#- Visual Studioarrow_forwardImport the ArrayList and List classes from the java.util package to create a list of phone numbers and also import the HashSet and Set classes from the java.util package to create a set of unique prefixes. Create a class called PhoneNumberPrefix with a main method that will contain the code to find the unique prefixes. Create a List called phoneNumbers and use the add method to add several phone numbers to the list. List<String> phoneNumbers = new ArrayList<>(); phoneNumbers.add("555-555-1234"); phoneNumbers.add("555-555-2345"); phoneNumbers.add("555-555-3456"); phoneNumbers.add("444-444-1234"); phoneNumbers.add("333-333-1234"); Create a Set called prefixes and use a for-each loop to iterate over the phoneNumbers list. For each phone number, we use the substring method to extract the first 7 characters, which represent the prefix, and add it to the prefixes set using the add method. Finally, use the println method to print the prefixes set, which will contain all of…arrow_forwardWhat criteria should be used to evaluate an ArrayList's performance?arrow_forward
- Will the toString () method always have a for loop if a class has an array for one of the instance variables? Why do you think that is?arrow_forwardImplement the Comparable interface in the Laptop class. When you implement the compareTo() method from the Comparable interface you must use at least two instance variables in the comparison. Once you have implemented the Comparable interface, in the main method: • Add the following comment - // Part 5 - Generic methods • Write the code to sort the Arraylist that you created in Part 4 . • Add the following code - System.out.println("------------------------------");arrow_forwardAdd a getUnsold method to the Auction class with the -following header: public ArrayList getUnsold() This method should iterate over the lots field, storing unsold lots in a new ArrayList local variable. What you are looking for is Lot objects whose highestBid field is null. At the end of the method, return the list of unsold lots.arrow_forward
arrow_back_ios
arrow_forward_ios
Recommended textbooks for you
- EBK JAVA PROGRAMMINGComputer ScienceISBN:9781337671385Author:FARRELLPublisher:CENGAGE LEARNING - CONSIGNMENT
EBK JAVA PROGRAMMING
Computer Science
ISBN:9781337671385
Author:FARRELL
Publisher:CENGAGE LEARNING - CONSIGNMENT
9.1: What is an Array? - Processing Tutorial; Author: The Coding Train;https://www.youtube.com/watch?v=NptnmWvkbTw;License: Standard Youtube License