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.
Example: File inputFile = new File(“input.txt”);
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.
Example: PrintWriter out = new PrintWriter(“output.txt”);
When you are done processing a file, be sure to close the Scanner or PrintWriter:
In.close();
Out.close();
Professor Liu