Enum type as class : Enum « Reflection « Java

1. Java
2. Reflection
3. Enum

Enum type as class

/*
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 *
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 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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 */

import static java.lang.System.out;

import java.util.Arrays;

enum Eon {
  HADEAN, ARCHAEAN, PROTEROZOIC, PHANEROZOIC
}

public class EnumConstants {
  public static void main(String... args) {
    try {
      Class<?> c = (args.length == 0 ? Eon.class : Class.forName(args[0]));
      out.format("Enum name:  %s%nEnum constants:  %s%n", c.getName(), Arrays
          .asList(c.getEnumConstants()));
      if (c == Eon.class)
        out.format("  Eon.values():  %s%n", Arrays.asList(Eon.values()));

      // production code should handle this exception more gracefully
    } catch (ClassNotFoundException x) {
      x.printStackTrace();
    }
  }
}

 

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