Cut Java String at a number of character

Question

I would like to cut a Java String when this String length is   50  and add       at the end of the string   Example    I have the following Java String    String str    abcdefghijklmnopqrtuvwxyz     I would like to cut the String at length   8    Result must be   String strOut    abcdefgh

User · Answer

Something like this may be   String str    abcdefghijklmnopqrtuvwxyz   if  str length    gt  8      str   str substring 0  8

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You can use safe substring   org apache commons lang3 StringUtils substring str  0  LENGTH

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Jakarta Commons StringUtils abbreviate    If  for some reason you don t want to use a 3rd-party library  at least copy the source code   One big benefit of this over the other answers to date is that it won t throw if you pass in a null

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String strOut   str substring 0  8

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Use substring  String strOut    abcdefghijklmnopqrtuvwxyz  String result   strOut substring 0  8             count start in 0 and 8 is excluded System out pritnln result     Note   substring int first  int second  takes two parameters   The first is inclusive and the second is exclusive

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You can use String substring    if str    null  amp  amp  str length    gt  8        return str substring 0  8             else       return str      You could however make a function where you pass the maximum number of characters that can be displayed  The ellipsis would then cut in only if the width specified isn t enough for the string   public String getShortString String input  int width      if str    null  amp  amp  str length    gt  width          return str substring 0  width - 3               else         return str            abcdefgh    System out println getShortString  abcdefghijklmnopqrstuvwxyz   11        abcdefghijk System out println getShortString  abcdefghijk   11       no need to trim

User · Answer

StringUtils abbreviate  abcdefg   6    This will give you the following result  abc     Where 6 is the needed length  and  abcdefg  is the string that needs to be abbrevieted

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Use substring and concatenate   if str length    gt  50      strOut   str substring 0 7

[java] Cut Java String at a number of character

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