正则表达式使模式中的单词

Question

I don't know how best to word this. I have a set of patterns: Usa-Texas Usa-Chicago USa-Washinton . . Usa-{some USA state}

Now, I need a regex(java) to extract only the USA. I am just wondering why this didn't work : "(//busa//b)" It wasn't extracting the USA..

Answer 1

use this to fix the problem.

 Pattern p = Pattern.compile("\\bthis\\b");
 Matcher m = p.matcher("Print this");
  m.find();
 System.out.println(m.group());

Output:

this