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  1. Prepare
  2. Java
  3. Strings
  4. Valid Username Regular Expression
  5. Discussions

Valid Username Regular Expression

  • mohammedhassan13
     + 0 comments
    public static final String regularExpression = "^\p{Alpha}\w{7,29}$";

    this regex consits of: 1. one and only one alphabitic charachter at the begining 2. and 7 : 29 alphabitic, numeric or under score charachters.