The ArrayList class is the part of Java Collection Framework. This class implements the List interface provided by the Collection framework. Here are features or key points about the ArrayList in Java: 1. The ArrayList grow and sink dynamically when we add/remove elements from it. 2. ArrayList use the array as an internal data structure to store element. 3. This provides flexibility to use elements using the indexes. 4. ArrayList allows to store duplicate values including "null" values. 5. It is an ordered collection i.e. it maintains the insertion order. 6. Java ArrayList supports Generics. 7. It only allows objects in the ArrayList. For primitives values like int, long etc. use the wrapper classes. 8. Java ArrayList Iterator and ListIterator implementation is fail-fast. 9. ArrayList is not thread safe. We need to apply synchronization if multiple threads will change ArrayList at the same time. Task: Write a program called ArrayList_Practice. In this program, please do the following operations. 1. Complete a method called RedundantCharacterMatch(ArrayList<Character> YourFirstName): the parameter of this method is an ArrayList<Character> whose elements are the characters in your first name (they should be in the order appear in your first name, e.g., if your first name is bob, then the ArrayList<Char> includes 'b', 'o', 'b'.). The method will check whether there exists duplicate characters in your name and return the index of those duplicate characters. For example, when using bob as first name, it will return b: 0, 2. 2. Create an ArrayList<Character> NameExample. All the characters of your first name will appear twice in this ArrayList. For example, if your first name is bob, then NameExample will include the following element {b,o,b,b,o,b}. Then, please use NameExample as parameter for the method RedundantCharacterMatch(). If your first name is bob, the results that print in the console will be b: 0, 2, 3, 5 o: 1, 4

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