Java - Tokenizing a string based on quotes and capital case

I was wondering what would be a good approach to tokenize a string such as:

"'The president' of the United States is Barack Obama"

So that it returns:

{The president, of, the, United States, is, Barack Obama}

Solution

After some looking around I managed to get the following regex:

([A-Z][a-zA-Z0-9-]*)([\s][A-Z][a-zA-Z0-9-]*)+|'([^']*?)'|[^\s{.,:;”’()?!}]+

Which seems to work for my purposes.