Regex to match words of a certain length

Question

I would like to know the regex to match words such that the words have a maximum length   for eg  if a word is of maximum 10 characters in length  I would like the regex to match  but if the length exceeds 10  then the regex should not match     I tried      w 10      but that brings me matches only if the minimum length of the word is 10 characters  If the word is more than 10 characters  it still matches  but matches only first 10 characters

User · Answer

Length of characters to be matched    n m   n  lt   length  lt   m  n     length    n  n     length  gt   n   And by default  the engine is greedy to match this pattern  For example  if the input is 123456789     d 2 5  will match 12345 which is with length 5    If you want the engine returns when length of 2 matched  use  d 2 5

User · Answer

Even  I was looking for the same regex but I wanted to include the all special character and blank spaces too  So here is the regex for that     A-Za-z0-9 s  amp            lt  gt        -  0 10

User · Answer

Method 1  Word boundaries would work perfectly here  such as with    b w 3 8  b  b w 2    b w  10  b  b w 5  b   RegEx Demo 1  Java  Some languages such as Java and C   are double-escape required     b  w 3 8   b   b  w 2     b  w  10   b   b  w 5   b   PS    b  w  10   b may not work for all languages or flavors   Test 1  import java util regex Matcher  import java util regex Pattern    public class RegularExpression       public static void main String   args             final String regex      b  w 3 8   b           final String string    words with length three to eight            final Pattern pattern   Pattern compile regex  Pattern MULTILINE           final Matcher matcher   pattern matcher string            while  matcher find                  System out println  Full match      matcher group 0                         Output 1  Full match  words Full match  with Full match  length Full match  three Full match  eight     Method 2  Another good-to-know method is to use negative lookarounds      lt   w  w 3 8     w     lt   w  w 2      lt   w  w  10     w     lt   w  w 5     w    Java     lt    w   w 3 8      w     lt    w   w 2      lt    w   w  10      w     lt    w   w 5      w    RegEx Demo 2  Test 2  import java util regex Matcher  import java util regex Pattern    public class RegularExpression       public static void main String   args             final String regex       lt    w   w 1 10      w            final String string    words with length three to eight            final Pattern pattern   Pattern compile regex  Pattern MULTILINE           final Matcher matcher   pattern matcher string            while  matcher find                  System out println  Full match      matcher group 0                         Output 2  Full match  words Full match  with Full match  length Full match  three Full match  to Full match  eight   RegEx Circuit  jex im visualizes regular expressions        If you wish to simplify modify explore the expression  it s been explained on the top right panel of regex101 com  If you d like  you can also watch in this link  how it would match against some sample inputs

User · Answer

w 0 10     allows words of up to 10 characters    w 5        allows words of more than 4 characters    w 5 10     allows words of between 5 and 10 characters

User · Answer

I think you want  b w 1 10  b  The  b matches a word boundary   Of course  you could also replace the  b and do   w 1 10    This will match a word of at most 10 characters as long as its the only contents of the string  I think this is what you were doing before   Since it s Java  you ll actually have to escape the backslashes     b  w 1 10   b   You probably knew this already  but it s gotten me before

[java] Regex to match words of a certain length

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