java io notserializableexception

data operations in the program are in characters (char in Java occupies 2 bytes, C + + char occupies 1 bytes), which requires that we have an IO interface to manipulate characters, To deal with the encoding conversion problem of character and Byte, that is, the write and reader interfaces and their implementation classes, and their class interface diagrams are as follows:The most important way to read a ch

io stream in JavaAccording to the direction of the flow is divided into the input stream and the output stream according to the size of the read text stream and the character stream byte stream bytes read read Chinese when it is easy to garbled characters stream by character reading is usually used to read the Chinese based on the read way node stream and cache stream file input stream and output stream (FileInputStream fileoutputstream) FileInputStre

Java operation files are processed by streams (in many other languages)First: Java IO stream, divided into: input stream and output stream (this is nonsense, this is from the point of view of the flow)Second: All IO streams in Java are divided into: byte stream and character

The detailed differences between Java NiO and Io (popular article)--ReprintAs far as speed is concernedCPU > 内存 > 硬盘 I-From hard disk to memory O-From memory to hard drive The first way : I read the data from the hard disk, then the program has been waiting, the data after reading, continue to operate. This approach is the simplest, called blocking IO.The second way: I read the data from t

streamThe print stream only has no input stream for the output stream, and the printwriter and printstream are for character bytes respectively.The two classes provide the overloaded print and println methods for output of multiple data types.Output operations of printwriter and printstream will not throw an exceptionPrintwriter and printstream have the automatic flush function.---- System. setout (receiving outputstream class): used to set the default output stream of the system.12. Object str

[Java iO] _ randomaccessfile notes Objectives of this chapter:Measure the test taker's knowledge about the role of the randomaccessfile class.You can use randomaccessfile to read data at a specified location. The main function of the randomaccessfile class is to complete the random reading function, which can read content at a specified location. Randomaccessfile reads data in bytes. For details about the l

Java-IO stream RandomAccessFile class, iorandomaccessfile RandomAccessFile RafDemo. java Package com. test. io; import java. io. file; import java.

What is Io? -------------------------------------------------------------------------------- Io (input/output) is the computer output/output interface. Java. Io provides a comprehensive IO Interface, including file read/write and standard device output. In