Scanner
and PrintWriter
This chapter discusses how to use the Scanner
class
for input from files and how to use the PrintWriter
class
for output to files.
This chapter is optional.
Except in a few exercises, disk I/O is not much
used again in these pages until the chapters on Exceptions
.
However, many interesting programs require disk I/O,
so it is useful to know.
Neither Scanner
nor PrintWriter
appear in the AP Computer Science test.
Scanner
with disk files.Scanner
PrintWriter
print()
and println()
Methods of PrintWriter
In our programs so far, what input stream has been used with Scanner
?