StringUtils indexOf

By | April 13, 2020

StringUtils indexOf method returns the index of the first occurrence of the specified character from a string. If it doesn’t find the character then it returns -1. A null CharSequence will return -1.


StringUtils.indexOf (CharSequence seq, CharSequence searchSeq);


  • seq the CharSequence to check, may be null
  • searchSeq the CharSequence to find, may be null

Returns: the first index of the search CharSequence,-1 if no match or null string input

3.0 Changed signature from indexOf(String, String) to indexOf(CharSequence, CharSequence)



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