Java: equivalent to C's strnicmp? (both startsWith and ignoreCase)

Question

 String string1 = "abCdefGhijklMnopQrstuvwYz";
 String string2 = "ABC";

I had been using string1.startsWith(string2), which would return false in the above example, but now I need to ignore case sensitivity, and there is not a String.startsWithIgnoreCase().

Besides doing

 string1.toLowerCase.startsWith(string2.toLowerCase());

is there an efficient way to see if string1 starts with string2 in a case-insensitive way?

Answer 1

The regionMatches method has a case sensitive parameter.

Answer 2

Use StringUtils library.

    StringUtils.startsWithIgnoreCase("abCdefGhijklMnopQrstuvwYz", "ABC"); // true

http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#startsWithIgnoreCase%28java.lang.String,%20java.lang.String%29

Answer 3

How about this:

string2.equalsIgnoreCase(string1.substring(0, string2.length())

Answer 4

string.toLowerCase().startsWith(string2.toLowerCase())