Java-preliminary understanding of-I/O Stream (byte-stream-filereader-read mode 1)

One.

After you have finished writing, read it. Now the object being explained has changed from FileWriter to FileReader, from output to input.

The explanation of Io flow is always around the character stream, and the foothold is also the two specific subclass object in the character flow.

The reader object's methods are described in various ways of reading.

The read exception is described.

Write the program completely and the results are as follows. When reading, the int type is returned, the result is 97, and the data stored in the text file is AB.

It's strange, printing again, actually get 98, how come?

Even reading three times, the result is a,98,-1. What is the reason?

The read action is repeated, the name of CH is repeated, and the knowledge points mentioned before the association.

Java-preliminary understanding of-I/O Stream (byte-stream-filereader-read mode 1)