Question: In java: a- Write a method that takes an ArrayList a of characters and returns a new ArrayList that doubles the elements of a. For

In java:

a- Write a method that takes an ArrayList a of characters and returns a new ArrayList that doubles the elements of a.

For example, if a = {'s', t', 'a', 'j'} then the result is {'s', 's', 't', 't', 'a', 'a', j', j'}.

b- write the main() method to test the method from part a.

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