源码：

public enum ColorX {
	RED, GREEN, BLUE;
}

编译后再反编译：

public final class ColorX extends Enum
{
    public static ColorX[] values()
    {
        return (ColorX[])$VALUES.clone();
    }
    public static ColorX valueOf(String name)
    {
        return (ColorX)Enum.valueOf(enum01/ColorX, name);
    }
    private ColorX(String s, int i)
    {
        super(s, i);
    }
    public static final ColorX RED;
    public static final ColorX GREEN;
    public static final ColorX BLUE;
    private static final ColorX $VALUES[];
    static 
    {
        RED = new ColorX("RED", 0);
        GREEN = new ColorX("GREEN", 1);
        BLUE = new ColorX("BLUE", 2);
        $VALUES = (new ColorX[] {
            RED, GREEN, BLUE
        });
    }
}