Package opennlp.tools.util

Class StringUtil

  • public class StringUtil
extends java.lang.Object

    • Constructor Summary

      Constructors 
      Constructor Description
      StringUtil()  

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static boolean isEmpty​(java.lang.CharSequence theString)
      Returns true if CharSequence.length() is 0 or null.
      static boolean isWhitespace​(char charCode)
      Determines if the specified character is a whitespace.
      static boolean isWhitespace​(int charCode)
      Determines if the specified character is a whitespace.
      static java.lang.String toLowerCase​(java.lang.CharSequence string)
      Converts to lower case independent of the current locale via Character.toLowerCase(char) which uses mapping information from the UnicodeData file.
      static java.lang.String toUpperCase​(java.lang.CharSequence string)
      Converts to upper case independent of the current locale via Character.toUpperCase(char) which uses mapping information from the UnicodeData file.

      • Methods inherited from class java.lang.Object

        equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • StringUtil

        public StringUtil()

    • Method Detail

      • isWhitespace

        public static boolean isWhitespace​(char charCode)
        Determines if the specified character is a whitespace. A character is considered a whitespace when one of the following conditions is meet:
        • Its a Character.isWhitespace(int) whitespace.
        • Its a part of the Unicode Zs category (Character.SPACE_SEPARATOR).
        Character.isWhitespace(int) does not include no-break spaces. In OpenNLP no-break spaces are also considered as white spaces.
        Parameters:
        charCode -
        Returns:
        true if white space otherwise false

      • isWhitespace

        public static boolean isWhitespace​(int charCode)
        Determines if the specified character is a whitespace. A character is considered a whitespace when one of the following conditions is meet:
        • Its a Character.isWhitespace(int) whitespace.
        • Its a part of the Unicode Zs category (Character.SPACE_SEPARATOR).
        Character.isWhitespace(int) does not include no-break spaces. In OpenNLP no-break spaces are also considered as white spaces.
        Parameters:
        charCode -
        Returns:
        true if white space otherwise false

      • toLowerCase

        public static java.lang.String toLowerCase​(java.lang.CharSequence string)
        Converts to lower case independent of the current locale via Character.toLowerCase(char) which uses mapping information from the UnicodeData file.
        Parameters:
        string -
        Returns:
        lower cased String

      • toUpperCase

        public static java.lang.String toUpperCase​(java.lang.CharSequence string)
        Converts to upper case independent of the current locale via Character.toUpperCase(char) which uses mapping information from the UnicodeData file.
        Parameters:
        string -
        Returns:
        upper cased String

      • isEmpty

        public static boolean isEmpty​(java.lang.CharSequence theString)
        Returns true if CharSequence.length() is 0 or null.
        Returns:
        true if CharSequence.length() is 0, otherwise false
        Since:
        1.5.1