What is the use of Pattern.quote method?

Question

I\'m trying to understand Pattern.quote using the following code:

String pattern = Pattern.quote("1252343% 8 567 hdfg gf^$545");
System         


        

Answer 1

\Q and \E, among all others, are thoroughly documented on the java.util.regex.Pattern Javadoc page. They mean "begin Quote", "End quote" and demark a region where all the chars have the literal meaning. The way to use the return of Pattern.quote is to feed it to Pattern.compile, or any other method that accepts a pattern string, such as String.split.