Java escape HTML - string replace slow?

Question

I have a Java application that makes heavy use of a large file, to read, process and give through to SolrEmbeddedServer (http://lucene.apache.org/solr/).

One of the func

Answer 1

The general algorithm for String.replace is a little complicated, but it shouldn't be that bad. Looking at the code, it is in fact implemented using regex so wont be fast - ick.

Obviously, you can write much faster code by iterating through character by character. Possibly working out the exact length first.

You might want to consider how characters outside of[ -~] are handled. You might also want to use a library which has already implemented the functionality.