Most efficient way to use replace multiple words in a string [duplicate]

Answer 1

Apart from that the actual replace is internally converted to a regex I think that approach is fine. A non-regex implementation can be found in StringUtils.replace(..) .

Looking at what alternatives there might be, you still need something to identify pairs of strings. This could look like:

MultiReplaceUtil.replaceAll{line, 
       {",", ""}, {"cat", "dog"}, {"football", "rugby"}};

or perhaps

MapReplaceUtil(String s, Map replacementMap);

or even

ArrayReplaceUtil(String s, String[] target, String[] replacement);

neither of which seems more intuitive to me in terms of coding practice.