10109 * @since 1.5
10110 */
10111 @HotSpotIntrinsicCandidate
10112 public static char reverseBytes(char ch) {
10113 return (char) (((ch & 0xFF00) >> 8) | (ch << 8));
10114 }
10115
10116 /**
10117 * Returns the Unicode name of the specified character
10118 * {@code codePoint}, or null if the code point is
10119 * {@link #UNASSIGNED unassigned}.
10120 * <p>
10121 * Note: if the specified character is not assigned a name by
10122 * the <i>UnicodeData</i> file (part of the Unicode Character
10123 * Database maintained by the Unicode Consortium), the returned
10124 * name is the same as the result of expression.
10125 *
10126 * <blockquote>{@code
10127 * Character.UnicodeBlock.of(codePoint).toString().replace('_', ' ')
10128 * + " "
10129 * + Integer.toHexString(codePoint).toUpperCase(Locale.ENGLISH);
10130 *
10131 * }</blockquote>
10132 *
10133 * @param codePoint the character (Unicode code point)
10134 *
10135 * @return the Unicode name of the specified character, or null if
10136 * the code point is unassigned.
10137 *
10138 * @exception IllegalArgumentException if the specified
10139 * {@code codePoint} is not a valid Unicode
10140 * code point.
10141 *
10142 * @since 1.7
10143 */
10144 public static String getName(int codePoint) {
10145 if (!isValidCodePoint(codePoint)) {
10146 throw new IllegalArgumentException();
10147 }
10148 String name = CharacterName.get(codePoint);
10149 if (name != null)
10150 return name;
10151 if (getType(codePoint) == UNASSIGNED)
10152 return null;
10153 UnicodeBlock block = UnicodeBlock.of(codePoint);
10154 if (block != null)
10155 return block.toString().replace('_', ' ') + " "
10156 + Integer.toHexString(codePoint).toUpperCase(Locale.ENGLISH);
10157 // should never come here
10158 return Integer.toHexString(codePoint).toUpperCase(Locale.ENGLISH);
10159 }
10160 }
|
10109 * @since 1.5
10110 */
10111 @HotSpotIntrinsicCandidate
10112 public static char reverseBytes(char ch) {
10113 return (char) (((ch & 0xFF00) >> 8) | (ch << 8));
10114 }
10115
10116 /**
10117 * Returns the Unicode name of the specified character
10118 * {@code codePoint}, or null if the code point is
10119 * {@link #UNASSIGNED unassigned}.
10120 * <p>
10121 * Note: if the specified character is not assigned a name by
10122 * the <i>UnicodeData</i> file (part of the Unicode Character
10123 * Database maintained by the Unicode Consortium), the returned
10124 * name is the same as the result of expression.
10125 *
10126 * <blockquote>{@code
10127 * Character.UnicodeBlock.of(codePoint).toString().replace('_', ' ')
10128 * + " "
10129 * + Integer.toHexString(codePoint).toUpperCase(Locale.ROOT);
10130 *
10131 * }</blockquote>
10132 *
10133 * @param codePoint the character (Unicode code point)
10134 *
10135 * @return the Unicode name of the specified character, or null if
10136 * the code point is unassigned.
10137 *
10138 * @exception IllegalArgumentException if the specified
10139 * {@code codePoint} is not a valid Unicode
10140 * code point.
10141 *
10142 * @since 1.7
10143 */
10144 public static String getName(int codePoint) {
10145 if (!isValidCodePoint(codePoint)) {
10146 throw new IllegalArgumentException();
10147 }
10148 String name = CharacterName.getInstance().getName(codePoint);
10149 if (name != null)
10150 return name;
10151 if (getType(codePoint) == UNASSIGNED)
10152 return null;
10153 UnicodeBlock block = UnicodeBlock.of(codePoint);
10154 if (block != null)
10155 return block.toString().replace('_', ' ') + " "
10156 + Integer.toHexString(codePoint).toUpperCase(Locale.ROOT);
10157 // should never come here
10158 return Integer.toHexString(codePoint).toUpperCase(Locale.ROOT);
10159 }
10160
10161 /**
10162 * Returns the code point value of the Unicode character specified by
10163 * the given Unicode character name.
10164 * <p>
10165 * Note: if a character is not assigned a name by the <i>UnicodeData</i>
10166 * file (part of the Unicode Character Database maintained by the Unicode
10167 * Consortium), its name is defined as the result of expression
10168 *
10169 * <blockquote>{@code
10170 * Character.UnicodeBlock.of(codePoint).toString().replace('_', ' ')
10171 * + " "
10172 * + Integer.toHexString(codePoint).toUpperCase(Locale.ROOT);
10173 *
10174 * }</blockquote>
10175 * <p>
10176 * The {@code name} matching is case insensitive, with any leading and
10177 * trailing whitespace character removed.
10178 *
10179 * @param name the Unicode character name
10180 *
10181 * @return the code point value of the character specified by its name.
10182 *
10183 * @throws IllegalArgumentException if the specified {@code name}
10184 * is not a valid Unicode character name.
10185 * @throws NullPointerException if {@code name} is {@code null}
10186 *
10187 * @since 9
10188 */
10189 public static int codePointOf(String name) {
10190 name = name.trim().toUpperCase(Locale.ROOT);
10191 int cp = CharacterName.getInstance().getCodePoint(name);
10192 if (cp != -1)
10193 return cp;
10194 try {
10195 int off = name.lastIndexOf(' ');
10196 if (off != -1) {
10197 cp = Integer.parseInt(name, off + 1, name.length(), 16);
10198 if (isValidCodePoint(cp) && name.equals(getName(cp)))
10199 return cp;
10200 }
10201 } catch (Exception x) {}
10202 throw new IllegalArgumentException("Unrecognized character name :" + name);
10203 }
10204 }
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