Missing closing bracket

Question

Missing closing bracket in character class near index 13 |\?*<":>+[]/' My code:

Pattern.compile("|\\?*<\":>+[]/'").matcher(name).matches()

Answer 1

You may use

Pattern.compile("[|\\\\?*<\":>+\\[\\]/']+").matcher(name).matches()

The regex means:

• [ - start of a positive character class:
  • | - a pipe
  • \\ - a backslash (requires additional backslashes in the string literal, "\\\\" )
  • ? - a question mark
  • * - an asterisk
  • < - an open angle bracket
  • " - a double quotationmark
  • : - a colon
  • > - a close angle bracket
  • + - a plus
  • \[ - a [ char (must be escaped when [ is inside a character class)
  • \] - a ] char (must be escaped when ] is inside a character class)
  • / - a forward slash
  • ' - a single quotation mark
• ]+ - end of character class, 1 or more occurrences.

So, this will validate a string that only consists of 1 or more occurrences of these chars. If you need the opposite, add ^ after the first [ :

Pattern.compile("[^|\\\\?*<\":>+\\[\\]/']+").matcher(name).matches()
//                ^ 

Java demo :

String name = "Wiktor Stribiżew";
System.out.println(Pattern.compile("[^|\\\\?*<\":>+\\[\\]/']+").matcher(name).matches());
// => true