As an example, short is compatible to int because the assignment intVariable = shortVariable; ... Conclusion to Part 1. Java types may be implicitly or explicitly compatible to each other.

Java supports arrays. Each element occupies the same number of bytes, and the exact number depends on the type of the element’s data item. Furthermore, all elements share the same type.

Difference between int and Integer. The key difference between the Java int and Integer types is that an int simply represents a whole number, while an Integer has additional properties and methods.