How can tokenize this string in java?

Question

How can I split these simple mathematical expressions into seperate strings?

I know that I basically want to use the regular expression: \"[0-9]+|[*+-^()]\"

Answer 1

You could use StringTokenizer(String str, String delim, boolean returnDelims), with the operators as delimiters. This way, at least get each token individually (including the delimiters). You could then determine what kind of token you're looking at.