[LANG-232] [lang] add getLength() method to ArrayUtils

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 2.1

Environment

Operating System: other
Platform: Other

• Bugzilla Id: 26594
• Assignee: Unassigned
• Reporter: Maarten Coene
• Created: 02/Feb/04 18:16
• Updated: 16/May/06 12:29
• Resolved: 16/May/06 12:29

Description

Hi,

I need a method to determine the length of an array which doesn't throw a NPE if
the array is null (this makes the java.lang.reflect.Array.getLength() method
unsuitable for me because it throws a NPE if array is null).

Here is a possible implementation for an Object array:

public static int getLength(final Object[] array) {
if (array == null)

{ return 0; } else { return array.length; }
}

or, maybe you can use Object which makes this method usable for primitive arrays
as well:

public static int getLength(final Object array) {
if (array == null) { return 0; }

else

{ return java.lang.reflect.Array.getLength(array); }

}

Can someone please add such a method ?

thanks,
Maarten