内部类的访问属性，有没有公开，私有，保护，静态，final 在包含这个内部类的类中的静态方法和非静态方法，其他静态类（上面所说的各种特点的内部类）中如何创建内部类和使用内部类
Note that the argument to filter() must be final.This is required by the anonymous inner class so that it can use an object from outside its scope.(注意，传向filter()的参数必须是final的。这在匿名内部类中是必需的，这样它才能够使
The File class has a deceiving(欺骗；行骗——误导) name;you might think it refers to(引用——指代) a file,but it does't.In fact,"FilePath" would have been a better name for th
Self-bounded types(自限定的类型) You can't inherit directly from a generic parameter.However,you can inherit from a class that uses that generic parameter in its own definition.That is, you can say:(
Base class hijacks an interface(page 700) Suppose you have a Pet class that is Comparable to other Pet objects: public class ComparablePet implements Comparable<
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