Iterator in Java Explained Simply – Safe Way to Traverse Collections

If you have ever used ArrayList, HashSet, or LinkedList in Java, you know iterating through them can be tricky. That’s where the Iterator comes in — a clean, safe, and consistent way to go through your data.

• What is an Iterator?
• Why we use it instead of loops
• Methods: hasNext(), next(), and remove()
• Example with ArrayList
• Real-life analogy: Shopping cart example

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