The idea of Java programming in reading notes

At this stage I am reading the Java programming idea this book, this book just read the first chapter of the part, some have to remember so recorded, I think to remember that there is a re-use this can be used to enhance the object, a class as the basic type of the next class, so that the purpose of the use of the class to enhance the role. Inheritance is one of the most critical aspects of object-oriented programming. Polymorphic use, the original is not very understanding, the original is simple to think that is overloaded, here side talked about with the multi-state interchangeable objects, when calling the method when the parameters passed in is a base class, but when called this method will be different subclasses passed this method, this method will automatically know which code to call to execute, This is called late binding, and when a subclass is passed into a function, this function will implement an "upward transformation" of the class to think of a base class, but the implementation method will pay attention to some details, so that the subclass is implemented, which is his magic, this is only a personal understanding later this book will be described in detail, But until the eighth chapter, then the detailed understanding.

The idea of Java programming in reading notes