This cheat sheet will act as a crash course for Java beginners and help you with various fundamentals of Java. A quick reference guide for regular expressions (regex), including symbols, ranges, grouping, assertions and some sample patterns to get you started. If you enjoy this post, please spread the love by sharing this post with others. XML eXternal Entity injection (XXE), which is now part of the OWASP Top 10 via the point A4, is a type of attack against an application that parses XML input.. XXE issue is referenced under the ID 611 in the Common Weakness Enumeration referential.. SELECT distinct col_1 FROM tablename 17:16 26 Mar 13, I have a database using regex. For statement consumes the initialization, condition and increment/decrement in one line thereby providing a shorter, easy to debug structure of looping. Searching for a string containing something like 2001::1a79 with a RegEx 2001::\x{1,4} will fail, but if I use 2001::[a-fA-F0-9]{1,4} will work. That way, you can keep different types of code separate from one another, making for better-organized files. WHERE (SUBSTR(col_1,-1,1)) = '5' At least 1 upper-case and 1 lower-case letter, Minimum 8 characters and Maximum 50 characters. Maybe you could add the toggles like (?i), (?-i), (?i: ), (?-i: ) and their cousins with "m" and "x". It returns a list of all child elements whose tag name is supplied. Two Dimensional or 2-D array is an array of an array where elements are stored in rows and columns. Returns all