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Reduce Java Object Size with Field Ordering
- The order of your variables in a class can affect object size, heap usage, and even JVM performance.
- JVM aligns fields like long, int, byte for performance. Misaligned fields result in padding, thereby wasting memory.
- Reordering fields can reduce object size and can be a low-effort, high-impact optimization.
- Follow the order: double, long, int, float, char, short, byte, boolean to minimize memory waste.
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