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Java: int vs Integer Explained in 30 Seconds! 💡

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Java: int vs Integer Explained in 30 Seconds! 💡

What’s the difference between `int` and `Integer` in Java? 🤔 `int` is a **primitive type** — fast and memory-efficient. `Integer` is a **wrapper class** — useful when you need objects, null values, or use in collections like List. 🧠 Example: int a = 5; Integer b = null; You can’t do that with plain `int`! This is a key concept for ...

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