src/main/java/wycc/util/ArrayUtils.java
public static String[] toStringArray(Collection<String> items) {
		String[] result = new String[items.size()];
		int i = 0;
		for(String s : items) {
			result[i++] = s;
		}
		return result;
	}
public static String[] toStringArray(Collection<String> items) {
		String[] result = new String[items.size()];
		int i = 0;
		for(String s : items) {
			result[i++] = s;
		}
		return result;
	}
Convert a collection of strings into a string array.

@param items
@return