io流_练习面试题（IO flow _ Practice interview questions）.doc

io流_练习面试题（IO flow _ Practice interview questions） How many types of streams are there in Java? JDK provides some abstract classes for each type of flow for inheritance. Please tell me which classes they are respectively Answer: byte stream, character stream. The byte stream inherits from the InputStream OutputStream, The character stream inherits from Reader Writer. There are many other streams in the java.io package, primarily for improved performance and ease of use. ----------------------------------------------------- What is java serialization and how to implement Java serialization? A: serialization is a mechanism for handling object flows, called object streams, that are streaming objects. The object can be read and written by convection, or the streamed object can be transferred between the networks. Serialization is to solve the problems caused by reading and writing to the object stream. Serialization implementation: implements the Serializable interface of the class that needs to be serialized, which does not have to be implemented, Implements Serializable just to mark that the object is serializable, and then use an output stream (such as: FileOutputStream) to construct it A ObjectOutputStream (object stream) object, followed by the writeObject (Object, obj) method of the ObjectOutputStream object Write the object with the parameter obj (that is, save its state) and use the input stream if it is resumed. ----------------------------------------------------- In Java, the input and output processing requires the incoming package to be java.io, The base classes of byte oriented input and output classes are Inputstream and Outputstream. The base classes of character oriented input and output classes are Reader and Writer. ----------------------------------------------------- What are the advantages of using processing streams? How do I identify whether the stream used is the processing stream or the node stream? [answer] [advantage] for developers, its easi