java 枚举的真面目

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源码
public enum EnumTest {

ONE,
TWO,
THREE,
;

}

jad -o EnumTest.class

生成EnumTest.jad

反编译后
public final class EnumTest extends Enum
{

public static EnumTest[] values()
{
    return (EnumTest[])$VALUES.clone();
}

public static EnumTest valueOf(String name)
{
    return (EnumTest)Enum.valueOf(com/bwatson/service/EnumTest, name);
}

private EnumTest(String s, int i)
{
    super(s, i);
}

public static final EnumTest ONE;
public static final EnumTest TWO;
public static final EnumTest THREE;
private static final EnumTest $VALUES[];

static 
{
    ONE = new EnumTest("ONE", 0);
    TWO = new EnumTest("TWO", 1);
    THREE = new EnumTest("THREE", 2);
    $VALUES = (new EnumTest[] {
        ONE, TWO, THREE
    });
}

}

编译器会创建一个有参构造并且是private