diff -r 1376481f15e7 -r 05224402145d emul/mini/src/main/java/java/lang/Boolean.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/emul/mini/src/main/java/java/lang/Boolean.java Wed Jan 23 20:39:23 2013 +0100 @@ -0,0 +1,282 @@ +/* + * Copyright (c) 1994, 2006, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. Oracle designates this + * particular file as subject to the "Classpath" exception as provided + * by Oracle in the LICENSE file that accompanied this code. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ + +package java.lang; + +/** + * The Boolean class wraps a value of the primitive type + * {@code boolean} in an object. An object of type + * {@code Boolean} contains a single field whose type is + * {@code boolean}. + *
+ * In addition, this class provides many methods for
+ * converting a {@code boolean} to a {@code String} and a
+ * {@code String} to a {@code boolean}, as well as other
+ * constants and methods useful when dealing with a
+ * {@code boolean}.
+ *
+ * @author Arthur van Hoff
+ * @since JDK1.0
+ */
+public final class Boolean implements java.io.Serializable,
+ Comparable Note: It is rarely appropriate to use this constructor.
+ * Unless a new instance is required, the static factory
+ * {@link #valueOf(boolean)} is generally a better choice. It is
+ * likely to yield significantly better space and time performance.
+ *
+ * @param value the value of the {@code Boolean}.
+ */
+ public Boolean(boolean value) {
+ this.value = value;
+ }
+
+ /**
+ * Allocates a {@code Boolean} object representing the value
+ * {@code true} if the string argument is not {@code null}
+ * and is equal, ignoring case, to the string {@code "true"}.
+ * Otherwise, allocate a {@code Boolean} object representing the
+ * value {@code false}. Examples:
+ * {@code new Boolean("True")} produces a {@code Boolean} object
+ * that represents {@code true}.
+ * Example: {@code Boolean.parseBoolean("True")} returns {@code true}.
+ * If there is no property with the specified name, or if the specified
+ * name is empty or null, then {@code false} is returned.
+ *
+ * @param name the system property name.
+ * @return the {@code boolean} value of the system property.
+ * @see java.lang.System#getProperty(java.lang.String)
+ * @see java.lang.System#getProperty(java.lang.String, java.lang.String)
+ */
+ public static boolean getBoolean(String name) {
+ boolean result = false;
+ try {
+ result = toBoolean(AbstractStringBuilder.getProperty(name));
+ } catch (IllegalArgumentException e) {
+ } catch (NullPointerException e) {
+ }
+ return result;
+ }
+
+ /**
+ * Compares this {@code Boolean} instance with another.
+ *
+ * @param b the {@code Boolean} instance to be compared
+ * @return zero if this object represents the same boolean value as the
+ * argument; a positive value if this object represents true
+ * and the argument represents false; and a negative value if
+ * this object represents false and the argument represents true
+ * @throws NullPointerException if the argument is {@code null}
+ * @see Comparable
+ * @since 1.5
+ */
+ public int compareTo(Boolean b) {
+ return compare(this.value, b.value);
+ }
+
+ /**
+ * Compares two {@code boolean} values.
+ * The value returned is identical to what would be returned by:
+ *
+ * {@code new Boolean("yes")} produces a {@code Boolean} object
+ * that represents {@code false}.
+ *
+ * @param s the string to be converted to a {@code Boolean}.
+ */
+ public Boolean(String s) {
+ this(toBoolean(s));
+ }
+
+ /**
+ * Parses the string argument as a boolean. The {@code boolean}
+ * returned represents the value {@code true} if the string argument
+ * is not {@code null} and is equal, ignoring case, to the string
+ * {@code "true"}.
+ * Example: {@code Boolean.parseBoolean("yes")} returns {@code false}.
+ *
+ * @param s the {@code String} containing the boolean
+ * representation to be parsed
+ * @return the boolean represented by the string argument
+ * @since 1.5
+ */
+ public static boolean parseBoolean(String s) {
+ return toBoolean(s);
+ }
+
+ /**
+ * Returns the value of this {@code Boolean} object as a boolean
+ * primitive.
+ *
+ * @return the primitive {@code boolean} value of this object.
+ */
+ public boolean booleanValue() {
+ return value;
+ }
+
+ /**
+ * Returns a {@code Boolean} instance representing the specified
+ * {@code boolean} value. If the specified {@code boolean} value
+ * is {@code true}, this method returns {@code Boolean.TRUE};
+ * if it is {@code false}, this method returns {@code Boolean.FALSE}.
+ * If a new {@code Boolean} instance is not required, this method
+ * should generally be used in preference to the constructor
+ * {@link #Boolean(boolean)}, as this method is likely to yield
+ * significantly better space and time performance.
+ *
+ * @param b a boolean value.
+ * @return a {@code Boolean} instance representing {@code b}.
+ * @since 1.4
+ */
+ public static Boolean valueOf(boolean b) {
+ return (b ? TRUE : FALSE);
+ }
+
+ /**
+ * Returns a {@code Boolean} with a value represented by the
+ * specified string. The {@code Boolean} returned represents a
+ * true value if the string argument is not {@code null}
+ * and is equal, ignoring case, to the string {@code "true"}.
+ *
+ * @param s a string.
+ * @return the {@code Boolean} value represented by the string.
+ */
+ public static Boolean valueOf(String s) {
+ return toBoolean(s) ? TRUE : FALSE;
+ }
+
+ /**
+ * Returns a {@code String} object representing the specified
+ * boolean. If the specified boolean is {@code true}, then
+ * the string {@code "true"} will be returned, otherwise the
+ * string {@code "false"} will be returned.
+ *
+ * @param b the boolean to be converted
+ * @return the string representation of the specified {@code boolean}
+ * @since 1.4
+ */
+ public static String toString(boolean b) {
+ return b ? "true" : "false";
+ }
+
+ /**
+ * Returns a {@code String} object representing this Boolean's
+ * value. If this object represents the value {@code true},
+ * a string equal to {@code "true"} is returned. Otherwise, a
+ * string equal to {@code "false"} is returned.
+ *
+ * @return a string representation of this object.
+ */
+ public String toString() {
+ return value ? "true" : "false";
+ }
+
+ /**
+ * Returns a hash code for this {@code Boolean} object.
+ *
+ * @return the integer {@code 1231} if this object represents
+ * {@code true}; returns the integer {@code 1237} if this
+ * object represents {@code false}.
+ */
+ public int hashCode() {
+ return value ? 1231 : 1237;
+ }
+
+ /**
+ * Returns {@code true} if and only if the argument is not
+ * {@code null} and is a {@code Boolean} object that
+ * represents the same {@code boolean} value as this object.
+ *
+ * @param obj the object to compare with.
+ * @return {@code true} if the Boolean objects represent the
+ * same value; {@code false} otherwise.
+ */
+ public boolean equals(Object obj) {
+ if (obj instanceof Boolean) {
+ return value == ((Boolean)obj).booleanValue();
+ }
+ return false;
+ }
+
+ /**
+ * Returns {@code true} if and only if the system property
+ * named by the argument exists and is equal to the string
+ * {@code "true"}. (Beginning with version 1.0.2 of the
+ * JavaTM platform, the test of
+ * this string is case insensitive.) A system property is accessible
+ * through {@code getProperty}, a method defined by the
+ * {@code System} class.
+ *
+ * Boolean.valueOf(x).compareTo(Boolean.valueOf(y))
+ *
+ *
+ * @param x the first {@code boolean} to compare
+ * @param y the second {@code boolean} to compare
+ * @return the value {@code 0} if {@code x == y};
+ * a value less than {@code 0} if {@code !x && y}; and
+ * a value greater than {@code 0} if {@code x && !y}
+ * @since 1.7
+ */
+ public static int compare(boolean x, boolean y) {
+ return (x == y) ? 0 : (x ? 1 : -1);
+ }
+
+ private static boolean toBoolean(String name) {
+ return ((name != null) && name.equalsIgnoreCase("true"));
+ }
+}