Java 使用反射获取枚举常量

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import java.util.Arrays;/*NowJava.com 提 供*/

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import static java.lang.System.out;

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enum Eon {

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    HADEAN, ARCHAEAN, PROTEROZOIC, PHANEROZOIC

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}

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public class EnumConstants {

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    public static void main(String... args) {

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        try {

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            Class<?> c = (args.length == 0 ? Eon.class : Class

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                    .forName(args[0]));

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            out.format("Enum name:  %s%nEnum constants:  %s%n",

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                    c.getName(), Arrays.asList(c.getEnumConstants()));

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            if (c == Eon.class)

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                out.format("  Eon.values():  %s%n",

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                        Arrays.asList(Eon.values()));

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            // production code should handle this exception more gracefully

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        } catch (ClassNotFoundException x) {

        /*

        时代Java 提供

        */

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            x.printStackTrace();

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        }

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    }

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}

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/*

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 * Copyright (c) 1995, 2008, Oracle and/or its affiliates. All rights reserved.

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 *

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 * Redistribution and use in source and binary forms, with or without

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 * modification, are permitted provided that the following conditions

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 * are met:

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 *   - Neither the name of Oracle or the names of its

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