Both Arrays.toString(Object[]) and Arrays.deepToString(Object[]) handle null array gracefully, simply returning a String “null”. I tend to use Java Collections far more than I use Java arrays.

The Java array size is set permanently when the array is initialized. The size or length count of an array in Java includes both null and non-null characters. Unlike the String and ArrayList, Java ...

The Java array length property does not have round brackets after the field. The Java String length () method does. Confusion here will cause compile time errors, so be careful.