Intro to JAVA see below:

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Implement a class CountingArrayList that extends ArrayList and that counts the number of calls to get and set.

import java.util.ArrayList;

public class CountingArrayList extends ArrayList { . . . /** Gets the counter of get or set operations. @param what "get" or "set" @return the number of get or set operations invoked on this array list. */ public int count(String what) { . . . } }