What does the following code display? ArrayList mylist mylist.add("XRAY"); mylist.add("YELLOW"); mylist.add("ZING"); = new ArrayList(); System.out.print(mylist.get(0).charAt(2)); Select one O A. XRAY O B. ZING O C. R O D. A
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- Use the Iterator Pattern: Create a class called Exercise, and then, in its main method, create an ArrayList called stringArrayList. Add the following five strings to stringArrayList: “one”, “two”, ”three”, ”four”, ”five”. Then, use a for loop and the index of stringArrayList to print all these five strings out to the console. 2. For stringArrayList above, can you use an iterator to traverse the five strings inside, without using the index? 3. If change stringArrayList into a TreeSet, how do you traverse the five strings use an iterator? Implement an Iterator: 4. Create a class called StringArray that is able to store a number of String objects. Create an instance variable, String[] values, (internal data storage) of StringArray to store all the strings. 5. Create a constructor for StringArray, which is able to build an object of StringArray using the parameter. public StringArray(String[] values) 6. Make the class StringArray implements Iterable So that it…How to use multithread in ArrayList? The ArrayList contains 100 Element. but the program only load 10 Element while it done 10 elemnt it continue load 10 element next until the program load all 100 Element.What is an annotation? How are annotations useful in writing our ArrayList<E> class?
- given an array of integer values , return true if 6 appears as either the first or last element in the array. firstLast6([1,2,36]) true firstLast([6,1,2,3]) true firstLast([13,6,1,2,3]) falsePlease use java. In this assignment, you will implement a class calledCustomIntegerArrayList. This class represents a fancy ArrayList that stores integers and supports additional operations not included in Java's built-in ArrayList methods. For example, the CustomIntegerArrayList class has a “splice” method which removes a specified number of elements from the CustomIntegerArrayList, starting at a given index. For a CustomIntegerArrayList that includes: 1, 2, 3, 4, and 5, calling splice(1, 2) will remove 2 items starting at index 1. This will remove 2 and 3 (the 2nd and 3rd items). The Cu stomIntegerArrayList class has 2 different (overloaded) constructors. (Remember, an overloaded constructor is a constructor that has the same name, but a different number, type, or sequence of parameters, as another constructor in the class.) Having 2 different constructors means you can create an instance of the CustomIntegerArrayList class in 2 different ways, depending on which constructor…The next five questions refer to the following String elements: ["It", "was", "a", "stormy", "night"] Write the code to declare an ArrayList containing these elements. What is the size of the list? What is its type?
- Please Use java only. Inthisassignment,youwillimplementaclasscalledCustomIntegerArrayList. Thisclass represents a fancy ArrayList that stores integers and supports additional operations not included in Java's built-in ArrayList methods. For example, the CustomIntegerArrayList class has a “splice” method which removes a specified number of elements from the CustomIntegerArrayList, starting at a given index. For a CustomIntegerArrayList that includes: 1, 2, 3, 4, and 5, calling splice(1, 2) will remove 2 items starting at index 1. This will remove 2 and 3 (the 2nd and 3rd items). The Cu stomIntegerArrayList class has 2 different (overloaded) constructors. (Remember, an overloaded constructor is a constructor that has the same name, but a different number, type, or sequence of parameters, as another constructor in the class.) Having 2 different constructors means you can create an instance of the CustomIntegerArrayList class in 2 different ways, depending on which constructor you…Question: What is the length of the array in MyArrayList after executing the following statements? MyArrayList<Double> list = new MyArrayList<>(); list.add(25.4); list.trimToSize(); list.add(15.4); list.add(35.4); list.add(17.4); list.add(7.4); public class MyArrayList<E> implements MyList<E> { public static final int INITIAL_CAPACITY = 16; private E[] data = (E[])new Object[INITIAL_CAPACITY]; private int size = 0; // Number of elements in the list /** Create an empty list */ public MyArrayList() { } /** Create a list from an array of objects */ public MyArrayList(E[] objects) { for (int i = 0; i < objects.length; i++) add(objects[i]); // Warning: don’t use super(objects)! } @Override /** Add a new element at the specified index */ public void add(int index, E e) { ensureCapacity(); // Move the elements to the right after the specified index for (int…4. Now examine the ArrayList methods in the above table, a) Which method retrieves elements from the ArrayList? b) Which method replaces the value of an element that already exists in the ArrayList? c) Which two methods initializes the value of an element? d) How do the two methods in (c) differ? Which method(s) would be appropriate in the above Java program (after we convert it to work with ArrayLists)?
- How would I add the following data (country and data) into an ArrayList? I keep getting an ArrayIndexOutOfBoundsExceptionSupport you have an ArrayList containing random integers. These integers can be any number, and each integer can appear more than once. For example, [2, 19, 21, 19, 21, 1, 3, 3, 6, 21, .....] Your job is to write a method called findEvenFrequentNumbers(ArrayList<Integer> list) that returns an ArrayList which has all the numbers appears in even frequency and in increasing order. e.g. list = [2, 19, 21, 19, 21, 1, 3, 3, 6, 21], should return [3, 19] list = [3, 3, 3, 1, 2, 2, 2, 2, 2], should return [] list = [1, 1, 1, 1, 1], should return [1] Note that you need to provide a class with the main function and also the imports.Java question Use the Iterator Pattern: Create a class called Exercise, and then, in its main method, create an ArrayList called stringArrayList. Add the following five strings to stringArrayList: “one”, “two”, ”three”, ”four”, ”five”. Then, use a for loop and the index of stringArrayList to print all these five strings out to the console. 2. For stringArrayList above, can you use an iterator to traverse the five strings inside, without using the index? 3. If change stringArrayList into a TreeSet, how do you traverse the five strings use an iterator? Implement an Iterator: 4. Create a class called StringArray that is able to store a number of String objects. Create an instance variable, String[] values, (internal data storage) of StringArray to store all the strings. 5. Create a constructor for StringArray, which is able to build an object of StringArray using the parameter. public StringArray(String[] values) 6. Make the class StringArray implements…