java.lang
Class Enum<T,extends,Enum,T>
- Comparable<T>, Serializable
This class represents a Java enumeration. All enumerations are
subclasses of this class.
Enum(String name, int ordinal)- This constructor is used by the compiler to create enumeration constants.
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protected Object | clone()- Cloning of enumeration constants is prevented, to maintain their
singleton status.
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int | compareTo(T e)- Returns an integer which represents the relative ordering of this
enumeration constant.
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boolean | equals(Object o)- Returns true if this enumeration is equivalent to the supplied object,
o.
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static | extends Enum> S valueOf(Class etype, String s)- Returns an Enum for a enum class given a description string of
the enum constant.
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protected void | finalize()- Enumerations can not have finalization methods.
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Class | getDeclaringClass()- Returns the type of this enumeration constant.
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int | hashCode()- Returns the hash code of this constant.
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String | name()- Returns the name of this enumeration constant.
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int | ordinal()- Returns the number of this enumeration constant, which represents
the order in which it was originally declared, starting from zero.
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String | toString()- Returns a textual representation of this enumeration constant.
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clone, equals, extends Object> getClass, finalize, hashCode, notify, notifyAll, toString, wait, wait, wait |
Enum
protected Enum(String name,
int ordinal) This constructor is used by the compiler to create enumeration constants.
name - the name of the enumeration constant.ordinal - the number of the enumeration constant, based on the
declaration order of the constants and starting from zero.
compareTo
public final int compareTo(T e)
Returns an integer which represents the relative ordering of this
enumeration constant. Enumeration constants are ordered by their
ordinals, which represents their declaration order. So, comparing
two identical constants yields zero, while one declared prior to
this returns a positive integer and one declared after yields a
negative integer.
- compareTo in interface Comparable<T>
e - the enumeration constant to compare.
- a negative integer if
e.ordinal <32this.ordinal,
zero if e.ordinal == this.ordinal and a positive
integer if e.ordinal > this.ordinal.
equals
public final boolean equals(Object o)
Returns true if this enumeration is equivalent to the supplied object,
o. Only one instance of an enumeration constant exists,
so the comparison is simply done using ==.
- equals in interface Object
o - the object to compare to this.
extends Enum> S valueOf
public static extends Enum> S valueOf(Class etype,
String s)
Returns an Enum for a enum class given a description string of
the enum constant.
finalize
protected final void finalize()
Enumerations can not have finalization methods.
- finalize in interface Object
getDeclaringClass
public final Class getDeclaringClass()
Returns the type of this enumeration constant. This is the class
corresponding to the declaration of the enumeration.
- the type of this enumeration constant.
hashCode
public final int hashCode()
Returns the hash code of this constant. This is simply the ordinal.
- hashCode in interface Object
- the hash code of this enumeration constant.
name
public final String name()
Returns the name of this enumeration constant.
- the name of the constant.
ordinal
public final int ordinal()
Returns the number of this enumeration constant, which represents
the order in which it was originally declared, starting from zero.
- the number of this constant.
toString
public String toString()
Returns a textual representation of this enumeration constant.
By default, this is simply the declared name of the constant, but
specific enumeration types may provide an implementation more suited
to the data being stored.
- toString in interface Object
- a textual representation of this constant.
Enum.java - Base class for all enums
Copyright (C) 2004, 2005 Free Software Foundation
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)
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