Engineering productivity investments depend on inflection points, scale, controls, data ... for only primitive types and Java objects; no way to deterministically free memory; a limited addressing ...

Java 25 introduces Compact Object Headers (JEP 519), delivering up to 30% CPU savings and reduced memory usage for applications with small objects. This user-friendly feature compresses object headers ...

If all of the values fall within the range of a float, it makes sense to use the smaller Java data type in this situation, otherwise the array elements needlessly consume memory.