Java string substitution ignores case

Today, ignoring the case when doing string substitution, the web found a very handy way to use the ReplaceAll method of string.

Java.lang.String.replaceAll (string regex, string replacement)

The first argument is a regular expression, and you can use (? i) to ignore the case of the string. Examples are as follows:

1 String AA = "Laalaappsadfasdfasdf"; 2 String pattern = "(? i) Laa"; 3 AA = Aa.replaceall (pattern, "LBB"); 4 System.out.println (AA);

The result of the final printing is: LBBLBBPPSADFASDFASDF

Java string substitution ignores case