What are wrapper classes and why are they useful for ArrayLists? In your answer, include examples of autoboxing and unboxing
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Q: Can objects that implement Comparable be found in an Unordered List? Why do you think that is?
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Q: What are wrapper classes and why are they useful for ArrayLists? Include examples of autoboxing and…
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Q: hat is the best way to remove duplicates from an ArrayList?
A: What is the best way to remove duplicates from an ArrayList?
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A: Other classes that are implemented with an array :-
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A: The iterator can be used to iterate through the ArrayList.
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Q: What are the distinctions between an ArrayList and a Vector? Which collection class is best for data…
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Q: pper classes and why are they useful for ArrayLists? Include examples of aut
A: Wrapper categories, because the name suggests, wraps around or encapsulates primitive datatypes in…
What are wrapper classes and why are they useful for ArrayLists? In your answer, include examples of autoboxing and unboxing
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- What are wrapper classes and why are they useful for ArrayLists? Include examples of autoboxing and unboxing.What are wrapper classes and why are they useful for ArrayLists? Include examples of autoboxing and unboxing. Word count: More than 300 words and less than 700 words.What are wrapper classes and why are they useful for ArrayLists? Include examples of autoboxing and unboxing. Word count: More than 300 and Less than 700 wods
- What are the two ways to remove duplicates from ArrayList?Besides the ArrayList class in Java, do you think there are other classes that are implemented with an array. Name those predefined Java classes, if any.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…
- What is an annotation? How are annotations useful in writing our ArrayList<E> class?Import 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…Using examples of your own, write short notes to explain how ArrayList and LinkedList work in Java. please give me a code example how to do that?
- Write assignments to the library, cs101, and track variables (which you defined in the previous three exercises) to create the appropriate ArrayList objects. Write them once using diamond notation and once without diamond notation, specifying the full type.What are the distinctions between an ArrayList and a Vector?Which collection class is best for data manipulation?Are they equivalent? 1) ArrayList<?> list = new ArrayList(); 2) ArrayList<? extends Object> list = new ArrayList<>();