Iterators Notes - operation on each element using an...

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Iterators Notes Iterator: an object that encapsulates the ability to visit each elements in a collection. Iterators have three methods: Iterator Interface Methods Method Purpose Return Value hasNext() Determines if there are more elements in the array True if there is another element in the collection next() Gets the next element in the collection Returns the next element in the collection and advances the iterator remove() Removes an element from the array Void Program Modifications
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Basic: Try making a program that creates an ArrayList and performs an
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Unformatted text preview: operation on each element using an iterator. Intermediate: Rewrite your database program to use an iterator to navigate each element. Advanced: Make a face using the swing and awt classes (without the MouseListener class). As you create each object, add the shapes to a collection. Using the collection from your first program (the one above), use an iterator to increase the size of each shape upon clicking the left mouse button....
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