Difference between matches() and find() in Java Regex

Question

I am trying to understand the difference between matches() and find().

According to the Javadoc, (from what I understand), matches() will search the ent

Answer 1

find() will consider the sub-string against the regular expression where as matches() will consider complete expression.

find() will returns true only if the sub-string of the expression matches the pattern.

public static void main(String[] args) {
        Pattern p = Pattern.compile("\\d");
        String candidate = "Java123";
        Matcher m = p.matcher(candidate);

        if (m != null){
            System.out.println(m.find());//true
            System.out.println(m.matches());//false
        }
    }