JAVA regular expression template

java.util.Scanner Import;
Import java.util.regex.Matcher;
Import java.util.regex.Pattern;

public class the RegExp {
    public static void main (String [] args) {
        // create input objects
        Scanner in = new Scanner (the System.in);
        System.out.println ( "Please input verification content:");
        String = in.next STR ();
        // definition rule
        String regex = "[\\ w] {4,8}" ;
        // call regExp method for receiving return value
        Boolean B = regExp (STR, REGEX);
        // the return value
        {IF (B)
            ( "! verification is successful") System.out.println;
        } {the else
            the System.out .println ( "malformed!");
        }
    }
    static boolean regExp public (String str, String regex) {
        // call the static method compile (); Gets the regular expression compiler
        Pattern = the p-Pattern.compile (regex);
        // call matcher () method to get the regular expression verifier will be verified write a string
        Matcher m = p.matcher (STR);
        // check, call matches () method
        boolean m.matches B = ();
        // returns a boolean value
        return b ;
    }
}