Maximum PC

private string anchorRegEx = @"(<a.*?>.*?</a>)";
private string hrefRegEx = @"href=\""(.*?)\""";
private string anchorTextRegEx = @"\s*<.*?>\s*";

private string anchorRegEx = @"(<img.*?>)";
private string hrefRegEx = @"src=\""(.*?)\""";

public class RegexTest {

    static String test1 = "http://www.site.com/attachment.php?attachmentid=12345";
    static String test2 = "http://www.site.com/attachments/abc123foo/filename.jpg";   

    public static void test (String str, String rx) {               
        if (str.matches(rx))
            System.out.println("str and rx match");
        else
            System.out.println("fail");
    }
   
    public static void main(String[] args) {

        String r1 = "http://www\\.site\\.com/attachment\\.php\\?attachmentid=[0-9]+";
        test(test1, r1);
       
        String r2 = "http://www\\.site\\.com/attachments/[a-zA-Z0-9]+/[a-zA-Z0-9]+\\.(jpg|jpeg|gif|png)";   
        test(test2, r2);
       
        System.exit(0);
    }
}