This is an excellent question. Zero-length arrays, also known as flexible arrays, are used to implement variable-length arrays, primarily in structures. That's a little confusing, so let's look at ...

To find the size or length of a Java array, follow these four steps Declare a variable of type array. Initialize the Java array to a non-null value. Use the length property of the array to get its ...

If fixed length fields were used, at least 28 bytes would have to be reserved for both names. Years ago, storage was costly, and variable field lengths were essential. Today, storage is dirt cheap ...