1.1 --- a/emul/mini/src/main/java/java/lang/Boolean.java Mon Feb 25 19:00:08 2013 +0100
1.2 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000
1.3 @@ -1,282 +0,0 @@
1.4 -/*
1.5 - * Copyright (c) 1994, 2006, 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 Boolean class wraps a value of the primitive type
1.33 - * {@code boolean} in an object. An object of type
1.34 - * {@code Boolean} contains a single field whose type is
1.35 - * {@code boolean}.
1.36 - * <p>
1.37 - * In addition, this class provides many methods for
1.38 - * converting a {@code boolean} to a {@code String} and a
1.39 - * {@code String} to a {@code boolean}, as well as other
1.40 - * constants and methods useful when dealing with a
1.41 - * {@code boolean}.
1.42 - *
1.43 - * @author Arthur van Hoff
1.44 - * @since JDK1.0
1.45 - */
1.46 -public final class Boolean implements java.io.Serializable,
1.47 - Comparable<Boolean>
1.48 -{
1.49 - /**
1.50 - * The {@code Boolean} object corresponding to the primitive
1.51 - * value {@code true}.
1.52 - */
1.53 - public static final Boolean TRUE = new Boolean(true);
1.54 -
1.55 - /**
1.56 - * The {@code Boolean} object corresponding to the primitive
1.57 - * value {@code false}.
1.58 - */
1.59 - public static final Boolean FALSE = new Boolean(false);
1.60 -
1.61 - /**
1.62 - * The Class object representing the primitive type boolean.
1.63 - *
1.64 - * @since JDK1.1
1.65 - */
1.66 - public static final Class<Boolean> TYPE = Class.getPrimitiveClass("boolean");
1.67 -
1.68 - /**
1.69 - * The value of the Boolean.
1.70 - *
1.71 - * @serial
1.72 - */
1.73 - private final boolean value;
1.74 -
1.75 - /** use serialVersionUID from JDK 1.0.2 for interoperability */
1.76 - private static final long serialVersionUID = -3665804199014368530L;
1.77 -
1.78 - /**
1.79 - * Allocates a {@code Boolean} object representing the
1.80 - * {@code value} argument.
1.81 - *
1.82 - * <p><b>Note: It is rarely appropriate to use this constructor.
1.83 - * Unless a <i>new</i> instance is required, the static factory
1.84 - * {@link #valueOf(boolean)} is generally a better choice. It is
1.85 - * likely to yield significantly better space and time performance.</b>
1.86 - *
1.87 - * @param value the value of the {@code Boolean}.
1.88 - */
1.89 - public Boolean(boolean value) {
1.90 - this.value = value;
1.91 - }
1.92 -
1.93 - /**
1.94 - * Allocates a {@code Boolean} object representing the value
1.95 - * {@code true} if the string argument is not {@code null}
1.96 - * and is equal, ignoring case, to the string {@code "true"}.
1.97 - * Otherwise, allocate a {@code Boolean} object representing the
1.98 - * value {@code false}. Examples:<p>
1.99 - * {@code new Boolean("True")} produces a {@code Boolean} object
1.100 - * that represents {@code true}.<br>
1.101 - * {@code new Boolean("yes")} produces a {@code Boolean} object
1.102 - * that represents {@code false}.
1.103 - *
1.104 - * @param s the string to be converted to a {@code Boolean}.
1.105 - */
1.106 - public Boolean(String s) {
1.107 - this(toBoolean(s));
1.108 - }
1.109 -
1.110 - /**
1.111 - * Parses the string argument as a boolean. The {@code boolean}
1.112 - * returned represents the value {@code true} if the string argument
1.113 - * is not {@code null} and is equal, ignoring case, to the string
1.114 - * {@code "true"}. <p>
1.115 - * Example: {@code Boolean.parseBoolean("True")} returns {@code true}.<br>
1.116 - * Example: {@code Boolean.parseBoolean("yes")} returns {@code false}.
1.117 - *
1.118 - * @param s the {@code String} containing the boolean
1.119 - * representation to be parsed
1.120 - * @return the boolean represented by the string argument
1.121 - * @since 1.5
1.122 - */
1.123 - public static boolean parseBoolean(String s) {
1.124 - return toBoolean(s);
1.125 - }
1.126 -
1.127 - /**
1.128 - * Returns the value of this {@code Boolean} object as a boolean
1.129 - * primitive.
1.130 - *
1.131 - * @return the primitive {@code boolean} value of this object.
1.132 - */
1.133 - public boolean booleanValue() {
1.134 - return value;
1.135 - }
1.136 -
1.137 - /**
1.138 - * Returns a {@code Boolean} instance representing the specified
1.139 - * {@code boolean} value. If the specified {@code boolean} value
1.140 - * is {@code true}, this method returns {@code Boolean.TRUE};
1.141 - * if it is {@code false}, this method returns {@code Boolean.FALSE}.
1.142 - * If a new {@code Boolean} instance is not required, this method
1.143 - * should generally be used in preference to the constructor
1.144 - * {@link #Boolean(boolean)}, as this method is likely to yield
1.145 - * significantly better space and time performance.
1.146 - *
1.147 - * @param b a boolean value.
1.148 - * @return a {@code Boolean} instance representing {@code b}.
1.149 - * @since 1.4
1.150 - */
1.151 - public static Boolean valueOf(boolean b) {
1.152 - return (b ? TRUE : FALSE);
1.153 - }
1.154 -
1.155 - /**
1.156 - * Returns a {@code Boolean} with a value represented by the
1.157 - * specified string. The {@code Boolean} returned represents a
1.158 - * true value if the string argument is not {@code null}
1.159 - * and is equal, ignoring case, to the string {@code "true"}.
1.160 - *
1.161 - * @param s a string.
1.162 - * @return the {@code Boolean} value represented by the string.
1.163 - */
1.164 - public static Boolean valueOf(String s) {
1.165 - return toBoolean(s) ? TRUE : FALSE;
1.166 - }
1.167 -
1.168 - /**
1.169 - * Returns a {@code String} object representing the specified
1.170 - * boolean. If the specified boolean is {@code true}, then
1.171 - * the string {@code "true"} will be returned, otherwise the
1.172 - * string {@code "false"} will be returned.
1.173 - *
1.174 - * @param b the boolean to be converted
1.175 - * @return the string representation of the specified {@code boolean}
1.176 - * @since 1.4
1.177 - */
1.178 - public static String toString(boolean b) {
1.179 - return b ? "true" : "false";
1.180 - }
1.181 -
1.182 - /**
1.183 - * Returns a {@code String} object representing this Boolean's
1.184 - * value. If this object represents the value {@code true},
1.185 - * a string equal to {@code "true"} is returned. Otherwise, a
1.186 - * string equal to {@code "false"} is returned.
1.187 - *
1.188 - * @return a string representation of this object.
1.189 - */
1.190 - public String toString() {
1.191 - return value ? "true" : "false";
1.192 - }
1.193 -
1.194 - /**
1.195 - * Returns a hash code for this {@code Boolean} object.
1.196 - *
1.197 - * @return the integer {@code 1231} if this object represents
1.198 - * {@code true}; returns the integer {@code 1237} if this
1.199 - * object represents {@code false}.
1.200 - */
1.201 - public int hashCode() {
1.202 - return value ? 1231 : 1237;
1.203 - }
1.204 -
1.205 - /**
1.206 - * Returns {@code true} if and only if the argument is not
1.207 - * {@code null} and is a {@code Boolean} object that
1.208 - * represents the same {@code boolean} value as this object.
1.209 - *
1.210 - * @param obj the object to compare with.
1.211 - * @return {@code true} if the Boolean objects represent the
1.212 - * same value; {@code false} otherwise.
1.213 - */
1.214 - public boolean equals(Object obj) {
1.215 - if (obj instanceof Boolean) {
1.216 - return value == ((Boolean)obj).booleanValue();
1.217 - }
1.218 - return false;
1.219 - }
1.220 -
1.221 - /**
1.222 - * Returns {@code true} if and only if the system property
1.223 - * named by the argument exists and is equal to the string
1.224 - * {@code "true"}. (Beginning with version 1.0.2 of the
1.225 - * Java<small><sup>TM</sup></small> platform, the test of
1.226 - * this string is case insensitive.) A system property is accessible
1.227 - * through {@code getProperty}, a method defined by the
1.228 - * {@code System} class.
1.229 - * <p>
1.230 - * If there is no property with the specified name, or if the specified
1.231 - * name is empty or null, then {@code false} is returned.
1.232 - *
1.233 - * @param name the system property name.
1.234 - * @return the {@code boolean} value of the system property.
1.235 - * @see java.lang.System#getProperty(java.lang.String)
1.236 - * @see java.lang.System#getProperty(java.lang.String, java.lang.String)
1.237 - */
1.238 - public static boolean getBoolean(String name) {
1.239 - boolean result = false;
1.240 - try {
1.241 - result = toBoolean(AbstractStringBuilder.getProperty(name));
1.242 - } catch (IllegalArgumentException e) {
1.243 - } catch (NullPointerException e) {
1.244 - }
1.245 - return result;
1.246 - }
1.247 -
1.248 - /**
1.249 - * Compares this {@code Boolean} instance with another.
1.250 - *
1.251 - * @param b the {@code Boolean} instance to be compared
1.252 - * @return zero if this object represents the same boolean value as the
1.253 - * argument; a positive value if this object represents true
1.254 - * and the argument represents false; and a negative value if
1.255 - * this object represents false and the argument represents true
1.256 - * @throws NullPointerException if the argument is {@code null}
1.257 - * @see Comparable
1.258 - * @since 1.5
1.259 - */
1.260 - public int compareTo(Boolean b) {
1.261 - return compare(this.value, b.value);
1.262 - }
1.263 -
1.264 - /**
1.265 - * Compares two {@code boolean} values.
1.266 - * The value returned is identical to what would be returned by:
1.267 - * <pre>
1.268 - * Boolean.valueOf(x).compareTo(Boolean.valueOf(y))
1.269 - * </pre>
1.270 - *
1.271 - * @param x the first {@code boolean} to compare
1.272 - * @param y the second {@code boolean} to compare
1.273 - * @return the value {@code 0} if {@code x == y};
1.274 - * a value less than {@code 0} if {@code !x && y}; and
1.275 - * a value greater than {@code 0} if {@code x && !y}
1.276 - * @since 1.7
1.277 - */
1.278 - public static int compare(boolean x, boolean y) {
1.279 - return (x == y) ? 0 : (x ? 1 : -1);
1.280 - }
1.281 -
1.282 - private static boolean toBoolean(String name) {
1.283 - return ((name != null) && name.equalsIgnoreCase("true"));
1.284 - }
1.285 -}