How to find string pattern in Java

Question

Here is a string like this in Java.

String string="abc$[A]$def$[B]$ghi";

I want to search words that are located in $[*]$ pattern. The result of above the string is A, B.

Answer 1

    String s = "abc$[A]$def$[B]$ghi";
    Pattern p = Pattern.compile("\\$\\[.*?\\]\\$");
    Matcher m = p.matcher(s);
    while(m.find()){
        String b =  m.group();
        System.out.println(">> " +b.substring(2, b.length()-2));
    }