java - java doc中关于抽象与接口(interface)的令人困惑的解释

Question

在java文档中，这样说:

Unlike interfaces, abstract classes can contain fields that are not static and final, and they can contain implemented methods.

这是正确的文字吗？这个not部分让我感到困惑，因为接口(interface)没有static或final字段，对吗？

来源:http://download.oracle.com/javase/tutorial/java/IandI/abstract.html

谢谢。

编辑:

public interface GroupedInterface extends Interface1,
                                        Interface2, Interface3 {

   // constant declarations
   double E = 2.718282;  // base of natural logarithms

   // method signatures
   void doSomething (int i, double x);
   int doSomethingElse(String s);

}

An interface can contain constant declarations in addition to method declarations. All constant values defined in an interface are implicitly public, static, and final. Once again, these modifiers can be omitted.

Answer 1

Every field declaration in the body of an interface is implicitly public, static, and final. It is permitted to redundantly specify any or all of these modifiers for such fields.

来自 Java 语言规范 ( here ) 的第 9.3 节