15.6 - Iterating Over Collections
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Practice Questions
Test your understanding with targeted questions
What can the enhanced for-loop be used for?
💡 Hint: Think of a scenario where you just want to read elements.
What does hasNext() do in an Iterator?
💡 Hint: Recall the method’s purpose in the iteration process.
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Interactive Quizzes
Quick quizzes to reinforce your learning
Which method allows you to avoid managing indices while iterating?
💡 Hint: Consider which method is specifically designed to streamline coding.
True or False: You can use the remove() method with every iteration method.
💡 Hint: Think about what happens when you try to modify a collection directly.
2 more questions available
Challenge Problems
Push your limits with advanced challenges
Write a program that uses an enhanced for-loop to print even numbers from an array of integers.
💡 Hint: Think of how to structure your loop to include a condition for even numbers.
Demonstrate how to safely remove elements from an ArrayList while iterating using an Iterator.
💡 Hint: Remember, `remove()` must be called on the iterator, not the list directly.
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