<ul><li>Primitives (like int) use value comparison when using ==. Objects (like Integer) use reference comparison when using ==.</li><li>Java maintains an internal cache of frequently used Integer objects in the range -128 to 127 to optimize memory usage.</li><li>When numbers are within the cache range, Java reuses existing objects; otherwise, new objects are created.</li><li>It is recommended to use .equals() for value comparison when working with wrapper classes.</li></ul>

Integer Caching in Java Explained: Why 1 == 1 is True but 128 == 128 is False!

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