+++ /dev/null
-/* Byte.java -- object wrapper for byte
- Copyright (C) 1998, 2001 Free Software Foundation, Inc.
-
-This file is part of GNU Classpath.
-
-GNU Classpath is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
-
-GNU Classpath 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 for more details.
-
-You should have received a copy of the GNU General Public License
-along with GNU Classpath; see the file COPYING. If not, write to the
-Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-02111-1307 USA.
-
-Linking this library statically or dynamically with other modules is
-making a combined work based on this library. Thus, the terms and
-conditions of the GNU General Public License cover the whole
-combination.
-
-As a special exception, the copyright holders of this library give you
-permission to link this library with independent modules to produce an
-executable, regardless of the license terms of these independent
-modules, and to copy and distribute the resulting executable under
-terms of your choice, provided that you also meet, for each linked
-independent module, the terms and conditions of the license of that
-module. An independent module is a module which is not derived from
-or based on this library. If you modify this library, you may extend
-this exception to your version of the library, but you are not
-obligated to do so. If you do not wish to do so, delete this
-exception statement from your version. */
-
-
-package java.lang;
-
-/**
- * Instances of class <code>Byte</code> represent primitive <code>byte</code>
- * values.
- *
- * Additionally, this class provides various helper functions and variables
- * useful to bytes.
- *
- * @author Paul Fisher
- * @author John Keiser
- * @author Per Bothner
- * @since JDK 1.0
- */
-public final class Byte extends Number implements Comparable
-{
- static final long serialVersionUID = -7183698231559129828L;
-
- /**
- * The minimum value a <code>byte</code> can represent is -128.
- */
- public static final byte MIN_VALUE = -128;
-
- /**
- * The maximum value a <code>byte</code> can represent is 127.
- */
- public static final byte MAX_VALUE = 127;
-
- /**
- * The primitive type <code>byte</code> is represented by this
- * <code>Class</code> object.
- */
- public static final Class TYPE = VMClassLoader.getPrimitiveClass('B');
-
- /**
- * The immutable value of this Byte.
- */
- private final byte value;
-
- /**
- * Create a <code>Byte</code> object representing the value of the
- * <code>byte</code> argument.
- *
- * @param value the value to use
- */
- public Byte(byte value)
- {
- this.value = value;
- }
-
- /**
- * Create a <code>Byte</code> object representing the value specified
- * by the <code>String</code> argument.
- *
- * @param s the string to convert.
- */
- public Byte(String s) throws NumberFormatException
- {
- value = parseByte(s, 10);
- }
-
- /**
- * Return a hashcode representing this Object.
- *
- * <code>Byte</code>'s hash code is calculated by simply returning its
- * value.
- *
- * @return this Object's hash code.
- */
- public int hashCode()
- {
- return value;
- }
-
- /**
- * Returns <code>true</code> if <code>obj</code> is an instance of
- * <code>Byte</code> and represents the same byte value.
- * @return whether these Objects are semantically equal.
- */
- public boolean equals(Object obj)
- {
- return ((obj instanceof Byte) && (value == ((Byte)obj).byteValue()));
- }
-
- /**
- * Converts the <code>byte</code> to a <code>String</code> and assumes
- * a radix of 10.
- * @param i the <code>byte</code> to convert to <code>String</code>
- * @return the <code>String</code> representation of the argument.
- */
- public static String toString(byte i)
- {
- return Integer.toString ((int) i);
- }
-
- /**
- * Converts the <code>Byte</code> value to a <code>String</code> and
- * assumes a radix of 10.
- * @return the <code>String</code> representation of this <code>Byte</code>.
- */
- public String toString()
- {
- return Integer.toString ((int) value);
- }
-
- /**
- * Creates a new <code>Byte</code> object using the <code>String</code>,
- * assuming a radix of 10.
- * @param s the <code>String</code> to convert.
- * @return the new <code>Byte</code>.
- * @see #Byte(java.lang.String)
- * @see #parseByte(java.lang.String)
- * @exception NumberFormatException thrown if the <code>String</code>
- * cannot be parsed as a <code>byte</code>.
- */
- public static Byte valueOf(String s) throws NumberFormatException
- {
- return new Byte(parseByte(s));
- }
-
- /**
- * Creates a new <code>Byte</code> object using the <code>String</code>
- * and specified radix (base).
- * @param s the <code>String</code> to convert.
- * @param radix the radix (base) to convert with.
- * @return the new <code>Byte</code>.
- * @see #parseByte(java.lang.String,int)
- * @exception NumberFormatException thrown if the <code>String</code>
- * cannot be parsed as a <code>byte</code>.
- */
- public static Byte valueOf(String s, int radix)
- throws NumberFormatException
- {
- return new Byte(parseByte(s, radix));
- }
-
- /**
- * Converts the specified <code>String</code> into a <code>byte</code>.
- * This function assumes a radix of 10.
- *
- * @param s the <code>String</code> to convert
- * @return the <code>byte</code> value of the <code>String</code>
- * argument.
- * @exception NumberFormatException thrown if the <code>String</code>
- * cannot be parsed as a <code>byte</code>.
- */
- public static byte parseByte(String s) throws NumberFormatException
- {
- return parseByte(s, 10);
- }
-
- /**
- * Converts the specified <code>String</code> into a <code>byte</code>
- * using the specified radix (base).
- *
- * @param str the <code>String</code> to convert
- * @param radix the radix (base) to use in the conversion
- * @return the <code>String</code> argument converted to </code>byte</code>.
- * @exception NumberFormatException thrown if the <code>String</code>
- * cannot be parsed as a <code>byte</code>.
- */
- public static byte parseByte(String str, int radix)
- throws NumberFormatException
- {
- int i = Integer.parseInt(str, radix);
- if (i < MIN_VALUE || i > MAX_VALUE)
- throw new NumberFormatException();
- return (byte) i;
- }
-
- /**
- * Convert the specified <code>String</code> into a <code>Byte</code>.
- * The <code>String</code> may represent decimal, hexadecimal, or
- * octal numbers.
- *
- * The <code>String</code> argument is interpreted based on the leading
- * characters. Depending on what the String begins with, the base will be
- * interpreted differently:
- *
- * <table>
- * <tr><th>Leading<br>Characters</th><th>Base</th></tr>
- * <tr><td>#</td><td>16</td></tr>
- * <tr><td>0x</td><td>16</td></tr>
- * <tr><td>0X</td><td>16</td></tr>
- * <tr><td>0</td><td>8</td></tr>
- * <tr><td>Anything<br>Else</td><td>10</td></tr>
- * </table>
- *
- * @param str the <code>String</code> to interpret.
- * @return the value of the String as a <code>Byte</code>.
- * @exception NumberFormatException thrown if the <code>String</code>
- * cannot be parsed as a <code>byte</code>.
- */
- public static Byte decode(String str) throws NumberFormatException
- {
- int i = (Integer.decode(str)).intValue();
- if (i < MIN_VALUE || i > MAX_VALUE)
- throw new NumberFormatException();
- return new Byte((byte) i);
- }
-
- /** Return the value of this <code>Byte</code> as an <code>short</code>.
- ** @return the value of this <code>Byte</code> as an <code>short</code>.
- **/
- public byte byteValue()
- {
- return value;
- }
-
- /** Return the value of this <code>Byte</code> as an <code>short</code>.
- ** @return the value of this <code>Byte</code> as an <code>short</code>.
- **/
- public short shortValue()
- {
- return value;
- }
-
- /** Return the value of this <code>Byte</code> as an <code>int</code>.
- ** @return the value of this <code>Byte</code> as an <code>int</code>.
- **/
- public int intValue()
- {
- return value;
- }
-
- /** Return the value of this <code>Byte</code> as a <code>long</code>.
- ** @return the value of this <code>Byte</code> as a <code>long</code>.
- **/
- public long longValue()
- {
- return value;
- }
-
- /** Return the value of this <code>Byte</code> as a <code>float</code>.
- ** @return the value of this <code>Byte</code> as a <code>float</code>.
- **/
- public float floatValue()
- {
- return value;
- }
-
- /** Return the value of this <code>Byte</code> as a <code>double</code>.
- ** @return the value of this <code>Byte</code> as a <code>double</code>.
- **/
- public double doubleValue()
- {
- return value;
- }
-
- /**
- * Compare two Bytes numerically by comparing their
- * <code>byte</code> values.
- * @return a positive value if this <code>Byte</code> is greater
- * in value than the argument <code>Byte</code>; a negative value
- * if this <code>Byte</code> is smaller in value than the argument
- * <code>Byte</code>; and <code>0</code>, zero, if this
- * <code>Byte</code> is equal in value to the argument
- * <code>Byte</code>.
- */
- public int compareTo(Byte b)
- {
- return (int)(value - b.byteValue());
- }
-
- /**
- * Behaves like <code>compareTo(java.lang.Byte)</code> unless the Object
- * is not a <code>Byte</code>. Then it throws a
- * <code>ClassCastException</code>.
- * @exception ClassCastException if the argument is not a
- * <code>Byte</code>.
- */
- public int compareTo(Object o)
- {
- return compareTo((Byte)o);
- }
-}
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