1.1 --- a/emul/src/main/java/java/lang/Short.java Wed Jan 23 20:16:48 2013 +0100
1.2 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000
1.3 @@ -1,468 +0,0 @@
1.4 -/*
1.5 - * Copyright (c) 1996, 2009, Oracle and/or its affiliates. All rights reserved.
1.6 - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 - *
1.8 - * This code is free software; you can redistribute it and/or modify it
1.9 - * under the terms of the GNU General Public License version 2 only, as
1.10 - * published by the Free Software Foundation. Oracle designates this
1.11 - * particular file as subject to the "Classpath" exception as provided
1.12 - * by Oracle in the LICENSE file that accompanied this code.
1.13 - *
1.14 - * This code is distributed in the hope that it will be useful, but WITHOUT
1.15 - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.16 - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.17 - * version 2 for more details (a copy is included in the LICENSE file that
1.18 - * accompanied this code).
1.19 - *
1.20 - * You should have received a copy of the GNU General Public License version
1.21 - * 2 along with this work; if not, write to the Free Software Foundation,
1.22 - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.23 - *
1.24 - * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.25 - * or visit www.oracle.com if you need additional information or have any
1.26 - * questions.
1.27 - */
1.28 -
1.29 -package java.lang;
1.30 -
1.31 -/**
1.32 - * The {@code Short} class wraps a value of primitive type {@code
1.33 - * short} in an object. An object of type {@code Short} contains a
1.34 - * single field whose type is {@code short}.
1.35 - *
1.36 - * <p>In addition, this class provides several methods for converting
1.37 - * a {@code short} to a {@code String} and a {@code String} to a
1.38 - * {@code short}, as well as other constants and methods useful when
1.39 - * dealing with a {@code short}.
1.40 - *
1.41 - * @author Nakul Saraiya
1.42 - * @author Joseph D. Darcy
1.43 - * @see java.lang.Number
1.44 - * @since JDK1.1
1.45 - */
1.46 -public final class Short extends Number implements Comparable<Short> {
1.47 -
1.48 - /**
1.49 - * A constant holding the minimum value a {@code short} can
1.50 - * have, -2<sup>15</sup>.
1.51 - */
1.52 - public static final short MIN_VALUE = -32768;
1.53 -
1.54 - /**
1.55 - * A constant holding the maximum value a {@code short} can
1.56 - * have, 2<sup>15</sup>-1.
1.57 - */
1.58 - public static final short MAX_VALUE = 32767;
1.59 -
1.60 - /**
1.61 - * The {@code Class} instance representing the primitive type
1.62 - * {@code short}.
1.63 - */
1.64 - public static final Class<Short> TYPE = (Class<Short>) Class.getPrimitiveClass("short");
1.65 -
1.66 - /**
1.67 - * Returns a new {@code String} object representing the
1.68 - * specified {@code short}. The radix is assumed to be 10.
1.69 - *
1.70 - * @param s the {@code short} to be converted
1.71 - * @return the string representation of the specified {@code short}
1.72 - * @see java.lang.Integer#toString(int)
1.73 - */
1.74 - public static String toString(short s) {
1.75 - return Integer.toString((int)s, 10);
1.76 - }
1.77 -
1.78 - /**
1.79 - * Parses the string argument as a signed {@code short} in the
1.80 - * radix specified by the second argument. The characters in the
1.81 - * string must all be digits, of the specified radix (as
1.82 - * determined by whether {@link java.lang.Character#digit(char,
1.83 - * int)} returns a nonnegative value) except that the first
1.84 - * character may be an ASCII minus sign {@code '-'}
1.85 - * (<code>'\u002D'</code>) to indicate a negative value or an
1.86 - * ASCII plus sign {@code '+'} (<code>'\u002B'</code>) to
1.87 - * indicate a positive value. The resulting {@code short} value
1.88 - * is returned.
1.89 - *
1.90 - * <p>An exception of type {@code NumberFormatException} is
1.91 - * thrown if any of the following situations occurs:
1.92 - * <ul>
1.93 - * <li> The first argument is {@code null} or is a string of
1.94 - * length zero.
1.95 - *
1.96 - * <li> The radix is either smaller than {@link
1.97 - * java.lang.Character#MIN_RADIX} or larger than {@link
1.98 - * java.lang.Character#MAX_RADIX}.
1.99 - *
1.100 - * <li> Any character of the string is not a digit of the
1.101 - * specified radix, except that the first character may be a minus
1.102 - * sign {@code '-'} (<code>'\u002D'</code>) or plus sign
1.103 - * {@code '+'} (<code>'\u002B'</code>) provided that the
1.104 - * string is longer than length 1.
1.105 - *
1.106 - * <li> The value represented by the string is not a value of type
1.107 - * {@code short}.
1.108 - * </ul>
1.109 - *
1.110 - * @param s the {@code String} containing the
1.111 - * {@code short} representation to be parsed
1.112 - * @param radix the radix to be used while parsing {@code s}
1.113 - * @return the {@code short} represented by the string
1.114 - * argument in the specified radix.
1.115 - * @throws NumberFormatException If the {@code String}
1.116 - * does not contain a parsable {@code short}.
1.117 - */
1.118 - public static short parseShort(String s, int radix)
1.119 - throws NumberFormatException {
1.120 - int i = Integer.parseInt(s, radix);
1.121 - if (i < MIN_VALUE || i > MAX_VALUE)
1.122 - throw new NumberFormatException(
1.123 - "Value out of range. Value:\"" + s + "\" Radix:" + radix);
1.124 - return (short)i;
1.125 - }
1.126 -
1.127 - /**
1.128 - * Parses the string argument as a signed decimal {@code
1.129 - * short}. The characters in the string must all be decimal
1.130 - * digits, except that the first character may be an ASCII minus
1.131 - * sign {@code '-'} (<code>'\u002D'</code>) to indicate a
1.132 - * negative value or an ASCII plus sign {@code '+'}
1.133 - * (<code>'\u002B'</code>) to indicate a positive value. The
1.134 - * resulting {@code short} value is returned, exactly as if the
1.135 - * argument and the radix 10 were given as arguments to the {@link
1.136 - * #parseShort(java.lang.String, int)} method.
1.137 - *
1.138 - * @param s a {@code String} containing the {@code short}
1.139 - * representation to be parsed
1.140 - * @return the {@code short} value represented by the
1.141 - * argument in decimal.
1.142 - * @throws NumberFormatException If the string does not
1.143 - * contain a parsable {@code short}.
1.144 - */
1.145 - public static short parseShort(String s) throws NumberFormatException {
1.146 - return parseShort(s, 10);
1.147 - }
1.148 -
1.149 - /**
1.150 - * Returns a {@code Short} object holding the value
1.151 - * extracted from the specified {@code String} when parsed
1.152 - * with the radix given by the second argument. The first argument
1.153 - * is interpreted as representing a signed {@code short} in
1.154 - * the radix specified by the second argument, exactly as if the
1.155 - * argument were given to the {@link #parseShort(java.lang.String,
1.156 - * int)} method. The result is a {@code Short} object that
1.157 - * represents the {@code short} value specified by the string.
1.158 - *
1.159 - * <p>In other words, this method returns a {@code Short} object
1.160 - * equal to the value of:
1.161 - *
1.162 - * <blockquote>
1.163 - * {@code new Short(Short.parseShort(s, radix))}
1.164 - * </blockquote>
1.165 - *
1.166 - * @param s the string to be parsed
1.167 - * @param radix the radix to be used in interpreting {@code s}
1.168 - * @return a {@code Short} object holding the value
1.169 - * represented by the string argument in the
1.170 - * specified radix.
1.171 - * @throws NumberFormatException If the {@code String} does
1.172 - * not contain a parsable {@code short}.
1.173 - */
1.174 - public static Short valueOf(String s, int radix)
1.175 - throws NumberFormatException {
1.176 - return valueOf(parseShort(s, radix));
1.177 - }
1.178 -
1.179 - /**
1.180 - * Returns a {@code Short} object holding the
1.181 - * value given by the specified {@code String}. The argument
1.182 - * is interpreted as representing a signed decimal
1.183 - * {@code short}, exactly as if the argument were given to
1.184 - * the {@link #parseShort(java.lang.String)} method. The result is
1.185 - * a {@code Short} object that represents the
1.186 - * {@code short} value specified by the string.
1.187 - *
1.188 - * <p>In other words, this method returns a {@code Short} object
1.189 - * equal to the value of:
1.190 - *
1.191 - * <blockquote>
1.192 - * {@code new Short(Short.parseShort(s))}
1.193 - * </blockquote>
1.194 - *
1.195 - * @param s the string to be parsed
1.196 - * @return a {@code Short} object holding the value
1.197 - * represented by the string argument
1.198 - * @throws NumberFormatException If the {@code String} does
1.199 - * not contain a parsable {@code short}.
1.200 - */
1.201 - public static Short valueOf(String s) throws NumberFormatException {
1.202 - return valueOf(s, 10);
1.203 - }
1.204 -
1.205 - private static class ShortCache {
1.206 - private ShortCache(){}
1.207 -
1.208 - static final Short cache[] = new Short[-(-128) + 127 + 1];
1.209 -
1.210 - static {
1.211 - for(int i = 0; i < cache.length; i++)
1.212 - cache[i] = new Short((short)(i - 128));
1.213 - }
1.214 - }
1.215 -
1.216 - /**
1.217 - * Returns a {@code Short} instance representing the specified
1.218 - * {@code short} value.
1.219 - * If a new {@code Short} instance is not required, this method
1.220 - * should generally be used in preference to the constructor
1.221 - * {@link #Short(short)}, as this method is likely to yield
1.222 - * significantly better space and time performance by caching
1.223 - * frequently requested values.
1.224 - *
1.225 - * This method will always cache values in the range -128 to 127,
1.226 - * inclusive, and may cache other values outside of this range.
1.227 - *
1.228 - * @param s a short value.
1.229 - * @return a {@code Short} instance representing {@code s}.
1.230 - * @since 1.5
1.231 - */
1.232 - public static Short valueOf(short s) {
1.233 - final int offset = 128;
1.234 - int sAsInt = s;
1.235 - if (sAsInt >= -128 && sAsInt <= 127) { // must cache
1.236 - return ShortCache.cache[sAsInt + offset];
1.237 - }
1.238 - return new Short(s);
1.239 - }
1.240 -
1.241 - /**
1.242 - * Decodes a {@code String} into a {@code Short}.
1.243 - * Accepts decimal, hexadecimal, and octal numbers given by
1.244 - * the following grammar:
1.245 - *
1.246 - * <blockquote>
1.247 - * <dl>
1.248 - * <dt><i>DecodableString:</i>
1.249 - * <dd><i>Sign<sub>opt</sub> DecimalNumeral</i>
1.250 - * <dd><i>Sign<sub>opt</sub></i> {@code 0x} <i>HexDigits</i>
1.251 - * <dd><i>Sign<sub>opt</sub></i> {@code 0X} <i>HexDigits</i>
1.252 - * <dd><i>Sign<sub>opt</sub></i> {@code #} <i>HexDigits</i>
1.253 - * <dd><i>Sign<sub>opt</sub></i> {@code 0} <i>OctalDigits</i>
1.254 - * <p>
1.255 - * <dt><i>Sign:</i>
1.256 - * <dd>{@code -}
1.257 - * <dd>{@code +}
1.258 - * </dl>
1.259 - * </blockquote>
1.260 - *
1.261 - * <i>DecimalNumeral</i>, <i>HexDigits</i>, and <i>OctalDigits</i>
1.262 - * are as defined in section 3.10.1 of
1.263 - * <cite>The Java™ Language Specification</cite>,
1.264 - * except that underscores are not accepted between digits.
1.265 - *
1.266 - * <p>The sequence of characters following an optional
1.267 - * sign and/or radix specifier ("{@code 0x}", "{@code 0X}",
1.268 - * "{@code #}", or leading zero) is parsed as by the {@code
1.269 - * Short.parseShort} method with the indicated radix (10, 16, or
1.270 - * 8). This sequence of characters must represent a positive
1.271 - * value or a {@link NumberFormatException} will be thrown. The
1.272 - * result is negated if first character of the specified {@code
1.273 - * String} is the minus sign. No whitespace characters are
1.274 - * permitted in the {@code String}.
1.275 - *
1.276 - * @param nm the {@code String} to decode.
1.277 - * @return a {@code Short} object holding the {@code short}
1.278 - * value represented by {@code nm}
1.279 - * @throws NumberFormatException if the {@code String} does not
1.280 - * contain a parsable {@code short}.
1.281 - * @see java.lang.Short#parseShort(java.lang.String, int)
1.282 - */
1.283 - public static Short decode(String nm) throws NumberFormatException {
1.284 - int i = Integer.decode(nm);
1.285 - if (i < MIN_VALUE || i > MAX_VALUE)
1.286 - throw new NumberFormatException(
1.287 - "Value " + i + " out of range from input " + nm);
1.288 - return valueOf((short)i);
1.289 - }
1.290 -
1.291 - /**
1.292 - * The value of the {@code Short}.
1.293 - *
1.294 - * @serial
1.295 - */
1.296 - private final short value;
1.297 -
1.298 - /**
1.299 - * Constructs a newly allocated {@code Short} object that
1.300 - * represents the specified {@code short} value.
1.301 - *
1.302 - * @param value the value to be represented by the
1.303 - * {@code Short}.
1.304 - */
1.305 - public Short(short value) {
1.306 - this.value = value;
1.307 - }
1.308 -
1.309 - /**
1.310 - * Constructs a newly allocated {@code Short} object that
1.311 - * represents the {@code short} value indicated by the
1.312 - * {@code String} parameter. The string is converted to a
1.313 - * {@code short} value in exactly the manner used by the
1.314 - * {@code parseShort} method for radix 10.
1.315 - *
1.316 - * @param s the {@code String} to be converted to a
1.317 - * {@code Short}
1.318 - * @throws NumberFormatException If the {@code String}
1.319 - * does not contain a parsable {@code short}.
1.320 - * @see java.lang.Short#parseShort(java.lang.String, int)
1.321 - */
1.322 - public Short(String s) throws NumberFormatException {
1.323 - this.value = parseShort(s, 10);
1.324 - }
1.325 -
1.326 - /**
1.327 - * Returns the value of this {@code Short} as a
1.328 - * {@code byte}.
1.329 - */
1.330 - public byte byteValue() {
1.331 - return (byte)value;
1.332 - }
1.333 -
1.334 - /**
1.335 - * Returns the value of this {@code Short} as a
1.336 - * {@code short}.
1.337 - */
1.338 - public short shortValue() {
1.339 - return value;
1.340 - }
1.341 -
1.342 - /**
1.343 - * Returns the value of this {@code Short} as an
1.344 - * {@code int}.
1.345 - */
1.346 - public int intValue() {
1.347 - return (int)value;
1.348 - }
1.349 -
1.350 - /**
1.351 - * Returns the value of this {@code Short} as a
1.352 - * {@code long}.
1.353 - */
1.354 - public long longValue() {
1.355 - return (long)value;
1.356 - }
1.357 -
1.358 - /**
1.359 - * Returns the value of this {@code Short} as a
1.360 - * {@code float}.
1.361 - */
1.362 - public float floatValue() {
1.363 - return (float)value;
1.364 - }
1.365 -
1.366 - /**
1.367 - * Returns the value of this {@code Short} as a
1.368 - * {@code double}.
1.369 - */
1.370 - public double doubleValue() {
1.371 - return (double)value;
1.372 - }
1.373 -
1.374 - /**
1.375 - * Returns a {@code String} object representing this
1.376 - * {@code Short}'s value. The value is converted to signed
1.377 - * decimal representation and returned as a string, exactly as if
1.378 - * the {@code short} value were given as an argument to the
1.379 - * {@link java.lang.Short#toString(short)} method.
1.380 - *
1.381 - * @return a string representation of the value of this object in
1.382 - * base 10.
1.383 - */
1.384 - public String toString() {
1.385 - return Integer.toString((int)value);
1.386 - }
1.387 -
1.388 - /**
1.389 - * Returns a hash code for this {@code Short}; equal to the result
1.390 - * of invoking {@code intValue()}.
1.391 - *
1.392 - * @return a hash code value for this {@code Short}
1.393 - */
1.394 - public int hashCode() {
1.395 - return (int)value;
1.396 - }
1.397 -
1.398 - /**
1.399 - * Compares this object to the specified object. The result is
1.400 - * {@code true} if and only if the argument is not
1.401 - * {@code null} and is a {@code Short} object that
1.402 - * contains the same {@code short} value as this object.
1.403 - *
1.404 - * @param obj the object to compare with
1.405 - * @return {@code true} if the objects are the same;
1.406 - * {@code false} otherwise.
1.407 - */
1.408 - public boolean equals(Object obj) {
1.409 - if (obj instanceof Short) {
1.410 - return value == ((Short)obj).shortValue();
1.411 - }
1.412 - return false;
1.413 - }
1.414 -
1.415 - /**
1.416 - * Compares two {@code Short} objects numerically.
1.417 - *
1.418 - * @param anotherShort the {@code Short} to be compared.
1.419 - * @return the value {@code 0} if this {@code Short} is
1.420 - * equal to the argument {@code Short}; a value less than
1.421 - * {@code 0} if this {@code Short} is numerically less
1.422 - * than the argument {@code Short}; and a value greater than
1.423 - * {@code 0} if this {@code Short} is numerically
1.424 - * greater than the argument {@code Short} (signed
1.425 - * comparison).
1.426 - * @since 1.2
1.427 - */
1.428 - public int compareTo(Short anotherShort) {
1.429 - return compare(this.value, anotherShort.value);
1.430 - }
1.431 -
1.432 - /**
1.433 - * Compares two {@code short} values numerically.
1.434 - * The value returned is identical to what would be returned by:
1.435 - * <pre>
1.436 - * Short.valueOf(x).compareTo(Short.valueOf(y))
1.437 - * </pre>
1.438 - *
1.439 - * @param x the first {@code short} to compare
1.440 - * @param y the second {@code short} to compare
1.441 - * @return the value {@code 0} if {@code x == y};
1.442 - * a value less than {@code 0} if {@code x < y}; and
1.443 - * a value greater than {@code 0} if {@code x > y}
1.444 - * @since 1.7
1.445 - */
1.446 - public static int compare(short x, short y) {
1.447 - return x - y;
1.448 - }
1.449 -
1.450 - /**
1.451 - * The number of bits used to represent a {@code short} value in two's
1.452 - * complement binary form.
1.453 - * @since 1.5
1.454 - */
1.455 - public static final int SIZE = 16;
1.456 -
1.457 - /**
1.458 - * Returns the value obtained by reversing the order of the bytes in the
1.459 - * two's complement representation of the specified {@code short} value.
1.460 - *
1.461 - * @return the value obtained by reversing (or, equivalently, swapping)
1.462 - * the bytes in the specified {@code short} value.
1.463 - * @since 1.5
1.464 - */
1.465 - public static short reverseBytes(short i) {
1.466 - return (short) (((i & 0xFF00) >> 8) | (i << 8));
1.467 - }
1.468 -
1.469 - /** use serialVersionUID from JDK 1.1. for interoperability */
1.470 - private static final long serialVersionUID = 7515723908773894738L;
1.471 -}