diff -r 5652acd48509 -r 42bc1e89134d emul/mini/src/main/java/java/lang/Byte.java --- a/emul/mini/src/main/java/java/lang/Byte.java Mon Feb 25 19:00:08 2013 +0100 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,452 +0,0 @@ -/* - * Copyright (c) 1996, 2009, 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 {@code Byte} class wraps a value of primitive type {@code byte} - * in an object. An object of type {@code Byte} contains a single - * field whose type is {@code byte}. - * - *

In addition, this class provides several methods for converting - * a {@code byte} to a {@code String} and a {@code String} to a {@code - * byte}, as well as other constants and methods useful when dealing - * with a {@code byte}. - * - * @author Nakul Saraiya - * @author Joseph D. Darcy - * @see java.lang.Number - * @since JDK1.1 - */ -public final class Byte extends Number implements Comparable { - - /** - * A constant holding the minimum value a {@code byte} can - * have, -27. - */ - public static final byte MIN_VALUE = -128; - - /** - * A constant holding the maximum value a {@code byte} can - * have, 27-1. - */ - public static final byte MAX_VALUE = 127; - - /** - * The {@code Class} instance representing the primitive type - * {@code byte}. - */ - public static final Class TYPE = (Class) Class.getPrimitiveClass("byte"); - - /** - * Returns a new {@code String} object representing the - * specified {@code byte}. The radix is assumed to be 10. - * - * @param b the {@code byte} to be converted - * @return the string representation of the specified {@code byte} - * @see java.lang.Integer#toString(int) - */ - public static String toString(byte b) { - return Integer.toString((int)b, 10); - } - - private static class ByteCache { - private ByteCache(){} - - static final Byte cache[] = new Byte[-(-128) + 127 + 1]; - - static { - for(int i = 0; i < cache.length; i++) - cache[i] = new Byte((byte)(i - 128)); - } - } - - /** - * Returns a {@code Byte} instance representing the specified - * {@code byte} value. - * If a new {@code Byte} instance is not required, this method - * should generally be used in preference to the constructor - * {@link #Byte(byte)}, as this method is likely to yield - * significantly better space and time performance since - * all byte values are cached. - * - * @param b a byte value. - * @return a {@code Byte} instance representing {@code b}. - * @since 1.5 - */ - public static Byte valueOf(byte b) { - final int offset = 128; - return ByteCache.cache[(int)b + offset]; - } - - /** - * Parses the string argument as a signed {@code byte} in the - * radix specified by the second argument. The characters in the - * string must all be digits, of the specified radix (as - * determined by whether {@link java.lang.Character#digit(char, - * int)} returns a nonnegative value) except that the first - * character may be an ASCII minus sign {@code '-'} - * ('\u002D') to indicate a negative value or an - * ASCII plus sign {@code '+'} ('\u002B') to - * indicate a positive value. The resulting {@code byte} value is - * returned. - * - *

An exception of type {@code NumberFormatException} is - * thrown if any of the following situations occurs: - *

- * - * @param s the {@code String} containing the - * {@code byte} - * representation to be parsed - * @param radix the radix to be used while parsing {@code s} - * @return the {@code byte} value represented by the string - * argument in the specified radix - * @throws NumberFormatException If the string does - * not contain a parsable {@code byte}. - */ - public static byte parseByte(String s, int radix) - throws NumberFormatException { - int i = Integer.parseInt(s, radix); - if (i < MIN_VALUE || i > MAX_VALUE) - throw new NumberFormatException( - "Value out of range. Value:\"" + s + "\" Radix:" + radix); - return (byte)i; - } - - /** - * Parses the string argument as a signed decimal {@code - * byte}. The characters in the string must all be decimal digits, - * except that the first character may be an ASCII minus sign - * {@code '-'} ('\u002D') to indicate a negative - * value or an ASCII plus sign {@code '+'} - * ('\u002B') to indicate a positive value. The - * resulting {@code byte} value is returned, exactly as if the - * argument and the radix 10 were given as arguments to the {@link - * #parseByte(java.lang.String, int)} method. - * - * @param s a {@code String} containing the - * {@code byte} representation to be parsed - * @return the {@code byte} value represented by the - * argument in decimal - * @throws NumberFormatException if the string does not - * contain a parsable {@code byte}. - */ - public static byte parseByte(String s) throws NumberFormatException { - return parseByte(s, 10); - } - - /** - * Returns a {@code Byte} object holding the value - * extracted from the specified {@code String} when parsed - * with the radix given by the second argument. The first argument - * is interpreted as representing a signed {@code byte} in - * the radix specified by the second argument, exactly as if the - * argument were given to the {@link #parseByte(java.lang.String, - * int)} method. The result is a {@code Byte} object that - * represents the {@code byte} value specified by the string. - * - *

In other words, this method returns a {@code Byte} object - * equal to the value of: - * - *

- * {@code new Byte(Byte.parseByte(s, radix))} - *
- * - * @param s the string to be parsed - * @param radix the radix to be used in interpreting {@code s} - * @return a {@code Byte} object holding the value - * represented by the string argument in the - * specified radix. - * @throws NumberFormatException If the {@code String} does - * not contain a parsable {@code byte}. - */ - public static Byte valueOf(String s, int radix) - throws NumberFormatException { - return valueOf(parseByte(s, radix)); - } - - /** - * Returns a {@code Byte} object holding the value - * given by the specified {@code String}. The argument is - * interpreted as representing a signed decimal {@code byte}, - * exactly as if the argument were given to the {@link - * #parseByte(java.lang.String)} method. The result is a - * {@code Byte} object that represents the {@code byte} - * value specified by the string. - * - *

In other words, this method returns a {@code Byte} object - * equal to the value of: - * - *

- * {@code new Byte(Byte.parseByte(s))} - *
- * - * @param s the string to be parsed - * @return a {@code Byte} object holding the value - * represented by the string argument - * @throws NumberFormatException If the {@code String} does - * not contain a parsable {@code byte}. - */ - public static Byte valueOf(String s) throws NumberFormatException { - return valueOf(s, 10); - } - - /** - * Decodes a {@code String} into a {@code Byte}. - * Accepts decimal, hexadecimal, and octal numbers given by - * the following grammar: - * - *
- *
- *
DecodableString: - *
Signopt DecimalNumeral - *
Signopt {@code 0x} HexDigits - *
Signopt {@code 0X} HexDigits - *
Signopt {@code #} HexDigits - *
Signopt {@code 0} OctalDigits - *

- *

Sign: - *
{@code -} - *
{@code +} - *
- *
- * - * DecimalNumeral, HexDigits, and OctalDigits - * are as defined in section 3.10.1 of - * The Java™ Language Specification, - * except that underscores are not accepted between digits. - * - *

The sequence of characters following an optional - * sign and/or radix specifier ("{@code 0x}", "{@code 0X}", - * "{@code #}", or leading zero) is parsed as by the {@code - * Byte.parseByte} method with the indicated radix (10, 16, or 8). - * This sequence of characters must represent a positive value or - * a {@link NumberFormatException} will be thrown. The result is - * negated if first character of the specified {@code String} is - * the minus sign. No whitespace characters are permitted in the - * {@code String}. - * - * @param nm the {@code String} to decode. - * @return a {@code Byte} object holding the {@code byte} - * value represented by {@code nm} - * @throws NumberFormatException if the {@code String} does not - * contain a parsable {@code byte}. - * @see java.lang.Byte#parseByte(java.lang.String, int) - */ - public static Byte decode(String nm) throws NumberFormatException { - int i = Integer.decode(nm); - if (i < MIN_VALUE || i > MAX_VALUE) - throw new NumberFormatException( - "Value " + i + " out of range from input " + nm); - return valueOf((byte)i); - } - - /** - * The value of the {@code Byte}. - * - * @serial - */ - private final byte value; - - /** - * Constructs a newly allocated {@code Byte} object that - * represents the specified {@code byte} value. - * - * @param value the value to be represented by the - * {@code Byte}. - */ - public Byte(byte value) { - this.value = value; - } - - /** - * Constructs a newly allocated {@code Byte} object that - * represents the {@code byte} value indicated by the - * {@code String} parameter. The string is converted to a - * {@code byte} value in exactly the manner used by the - * {@code parseByte} method for radix 10. - * - * @param s the {@code String} to be converted to a - * {@code Byte} - * @throws NumberFormatException If the {@code String} - * does not contain a parsable {@code byte}. - * @see java.lang.Byte#parseByte(java.lang.String, int) - */ - public Byte(String s) throws NumberFormatException { - this.value = parseByte(s, 10); - } - - /** - * Returns the value of this {@code Byte} as a - * {@code byte}. - */ - public byte byteValue() { - return value; - } - - /** - * Returns the value of this {@code Byte} as a - * {@code short}. - */ - public short shortValue() { - return (short)value; - } - - /** - * Returns the value of this {@code Byte} as an - * {@code int}. - */ - public int intValue() { - return (int)value; - } - - /** - * Returns the value of this {@code Byte} as a - * {@code long}. - */ - public long longValue() { - return (long)value; - } - - /** - * Returns the value of this {@code Byte} as a - * {@code float}. - */ - public float floatValue() { - return (float)value; - } - - /** - * Returns the value of this {@code Byte} as a - * {@code double}. - */ - public double doubleValue() { - return (double)value; - } - - /** - * Returns a {@code String} object representing this - * {@code Byte}'s value. The value is converted to signed - * decimal representation and returned as a string, exactly as if - * the {@code byte} value were given as an argument to the - * {@link java.lang.Byte#toString(byte)} method. - * - * @return a string representation of the value of this object in - * base 10. - */ - public String toString() { - return Integer.toString((int)value); - } - - /** - * Returns a hash code for this {@code Byte}; equal to the result - * of invoking {@code intValue()}. - * - * @return a hash code value for this {@code Byte} - */ - public int hashCode() { - return (int)value; - } - - /** - * Compares this object to the specified object. The result is - * {@code true} if and only if the argument is not - * {@code null} and is a {@code Byte} object that - * contains the same {@code byte} value as this object. - * - * @param obj the object to compare with - * @return {@code true} if the objects are the same; - * {@code false} otherwise. - */ - public boolean equals(Object obj) { - if (obj instanceof Byte) { - return value == ((Byte)obj).byteValue(); - } - return false; - } - - /** - * Compares two {@code Byte} objects numerically. - * - * @param anotherByte the {@code Byte} to be compared. - * @return the value {@code 0} if this {@code Byte} is - * equal to the argument {@code Byte}; a value less than - * {@code 0} if this {@code Byte} is numerically less - * than the argument {@code Byte}; and a value greater than - * {@code 0} if this {@code Byte} is numerically - * greater than the argument {@code Byte} (signed - * comparison). - * @since 1.2 - */ - public int compareTo(Byte anotherByte) { - return compare(this.value, anotherByte.value); - } - - /** - * Compares two {@code byte} values numerically. - * The value returned is identical to what would be returned by: - * 

-     *    Byte.valueOf(x).compareTo(Byte.valueOf(y))
-     *
- * - * @param x the first {@code byte} to compare - * @param y the second {@code byte} 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(byte x, byte y) { - return x - y; - } - - /** - * The number of bits used to represent a {@code byte} value in two's - * complement binary form. - * - * @since 1.5 - */ - public static final int SIZE = 8; - - /** use serialVersionUID from JDK 1.1. for interoperability */ - private static final long serialVersionUID = -7183698231559129828L; -}