In prior Java 101 articles, I referred to the concepts of redirection, standard input device, and standard output device. To demonstrate inputting data, several examples called System.in.read ().

Finally, you’ll see an example that demonstrates Java networking as implemented from Java 7 forward, in NIO.2. Socket programming boils down to two systems communicating with one another.

For example, to open the input stream for a file, we pass the name of the file into a java.io.FileReader object's constructor as follows: ...