Reformat codes with some spacing

[BenCheung0422]

Added spaces before array initialization, within array initialization, code braces. I think single line code braces should not be reformatted if they are short to reduce line uses. A line feed after description in JavaDoc is removed to reduce line uses. Smart tabs is enabled. More as described in EditorConfig file if there is no missing config. Simple one-line codes should not be reformatted to reduce line uses and ensure some neatness. JavaDoc param and throw description is no longer aligned for convenience.