202 private static class ShortCache {
203 private ShortCache(){}
204
205 static final Short cache[] = new Short[-(-128) + 127 + 1];
206
207 static {
208 for(int i = 0; i < cache.length; i++)
209 cache[i] = new Short((short)(i - 128));
210 }
211 }
212
213 /**
214 * Returns a {@code Short} instance representing the specified
215 * {@code short} value.
216 * If a new {@code Short} instance is not required, this method
217 * should generally be used in preference to the constructor
218 * {@link #Short(short)}, as this method is likely to yield
219 * significantly better space and time performance by caching
220 * frequently requested values.
221 *
222 * @param s a short value.
223 * @return a {@code Short} instance representing {@code s}.
224 * @since 1.5
225 */
226 public static Short valueOf(short s) {
227 final int offset = 128;
228 int sAsInt = s;
229 if (sAsInt >= -128 && sAsInt <= 127) { // must cache
230 return ShortCache.cache[sAsInt + offset];
231 }
232 return new Short(s);
233 }
234
235 /**
236 * Decodes a {@code String} into a {@code Short}.
237 * Accepts decimal, hexadecimal, and octal numbers given by
238 * the following grammar:
239 *
240 * <blockquote>
241 * <dl>
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202 private static class ShortCache {
203 private ShortCache(){}
204
205 static final Short cache[] = new Short[-(-128) + 127 + 1];
206
207 static {
208 for(int i = 0; i < cache.length; i++)
209 cache[i] = new Short((short)(i - 128));
210 }
211 }
212
213 /**
214 * Returns a {@code Short} instance representing the specified
215 * {@code short} value.
216 * If a new {@code Short} instance is not required, this method
217 * should generally be used in preference to the constructor
218 * {@link #Short(short)}, as this method is likely to yield
219 * significantly better space and time performance by caching
220 * frequently requested values.
221 *
222 * This method will always cache values in the range -128 to 127,
223 * inclusive, and may cache other values outside of this range.
224 *
225 * @param s a short value.
226 * @return a {@code Short} instance representing {@code s}.
227 * @since 1.5
228 */
229 public static Short valueOf(short s) {
230 final int offset = 128;
231 int sAsInt = s;
232 if (sAsInt >= -128 && sAsInt <= 127) { // must cache
233 return ShortCache.cache[sAsInt + offset];
234 }
235 return new Short(s);
236 }
237
238 /**
239 * Decodes a {@code String} into a {@code Short}.
240 * Accepts decimal, hexadecimal, and octal numbers given by
241 * the following grammar:
242 *
243 * <blockquote>
244 * <dl>
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