Java Read from a File, Write to a File

Rio Hondo College
CIT 136 Java Programming
To read input from a disk file, the Scanner class relies on another class, File, which describe disk files and directories.

Then use the File object to construct a Scanner object:

Scanner in = new Scanner (inputFile);

To write output to a file, you construct a PrintWriter object with the desired file name.

When you are done processing a file, be sure to close the Scanner or PrintWriter:

Professor Liu