145 lines
2.9 KiB
Java
145 lines
2.9 KiB
Java
/* Copyright (C) 1998, 1999 Cygnus Solutions
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This file is part of libgcj.
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This software is copyrighted work licensed under the terms of the
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Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
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details. */
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package java.lang;
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/**
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* @author Per Bothner <bothner@cygnus.com>
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* @date April 17, 1998.
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*/
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/* Written using "Java Class Libraries", 2nd edition, plus online
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* API docs for JDK 1.2 beta from http://www.javasoft.com.
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* Status: Believed complete and correct.
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* Includes JDK 1.2 methods.
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*/
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public final class Byte extends Number implements Comparable
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{
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byte value;
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public final static byte MIN_VALUE = -128;
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public final static byte MAX_VALUE = 127;
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// This initialization is seemingly circular, but it is accepted
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// by javac, and is handled specially by gcc.
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public static final Class TYPE = byte.class;
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public Byte(byte value)
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{
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this.value = value;
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}
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public Byte(String str)
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throws NumberFormatException
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{
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this.value = parseByte(str, 10);
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}
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public byte byteValue()
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{
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return value;
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}
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public short shortValue()
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{
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return value;
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}
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public int intValue()
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{
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return value;
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}
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public long longValue ()
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{
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return value;
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}
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public float floatValue ()
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{
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return (float) value;
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}
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public double doubleValue ()
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{
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return (double) value;
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}
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public static Byte decode(String str)
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throws NumberFormatException
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{
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int i = (Integer.decode(str)).intValue();
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if (i < MIN_VALUE || i > MAX_VALUE)
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throw new NumberFormatException();
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return new Byte((byte) i);
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}
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public static byte parseByte(String str, int radix)
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throws NumberFormatException
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{
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int i = Integer.parseInt(str, radix);
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if (i < MIN_VALUE || i > MAX_VALUE)
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throw new NumberFormatException();
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return (byte) i;
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}
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public static byte parseByte(String str)
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throws NumberFormatException
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{
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return parseByte(str, 10);
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}
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public static Byte valueOf(String str, int radix)
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throws NumberFormatException
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{
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return new Byte(parseByte(str, radix));
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}
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public static Byte valueOf(String str)
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throws NumberFormatException
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{
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return valueOf(str, 10);
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}
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// Added in JDK 1.2
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public int compareTo(Byte anotherByte)
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{
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return this.value - anotherByte.value;
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}
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// Added in JDK 1.2
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public int compareTo(Object o) throws ClassCastException
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{
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if (o instanceof Byte)
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return this.value - ((Byte) o).value;
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else
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throw new ClassCastException();
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}
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public boolean equals(Object obj)
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{
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return obj != null && (obj instanceof Byte) && ((Byte)obj).value == value;
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}
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// Verified that hashCode is returns plain value (see Boolean_1 test).
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public int hashCode()
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{
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return value;
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}
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public String toString()
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{
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return Integer.toString((int) value);
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}
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public static String toString(byte value)
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{
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return Integer.toString((int) value);
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}
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}
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