In Java language, primitive data types are the building blocks ... as a default data type for integral values unless if there is no problem about memory. The long data type is a 64-bit two's ...

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.

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 ...