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

This is certainly not the most efficient way to do a lot of replacements. Since strings are immutable, each .replace() leads to the construction of a new String object. For the example you give, each call to this function leads to the temporary creation of 6 String objects.

Considering the example you give, the simplest solution is to use an existing library function for HTML entity encoding. Apache commons StringEscapeUtils is one option. Another one is HTMLEntities