Class StringUtils


  • public class StringUtils
    extends Object
    Utility class for String manipulations.
    • Constructor Detail

      • StringUtils

        public StringUtils()
    • Method Detail

      • isEmpty

        public static boolean isEmpty​(String str)

        Checks if a String is empty ("") or null.

         StringUtils.isEmpty(null)      = true
         StringUtils.isEmpty("")        = true
         StringUtils.isEmpty(" ")       = false
         StringUtils.isEmpty("bob")     = false
         StringUtils.isEmpty("  bob  ") = false
         

        NOTE: This method changed in Lang version 2.0. It no longer trims the String. That functionality is available in isBlank().

        Parameters:
        str - the String to check, may be null
        Returns:
        true if the String is empty or null