Java Reference
In-Depth Information
Display 10.1
Sending Output to a Text File
(part 2 of 2)
15 {
16 System.out.println("Error opening the file stuff.txt.");
17 System.exit(0);
18 }
19 System.out.println("Writing to file.");
20 outputStream.println("The quick brown fox");
21 outputStream.println("jumps over the lazy dog.");
22 outputStream.close();
23 System.out.println("End of program.");
24 }
25 }
Sample Dialogue
Writing to file.
End of program.
F
ILE
stuff.txt
(after the program is run.)
The quick brown fox
jumps over the lazy dog.
You can read this file
using a text editor.
Opening a Text File for Writing Output
You create a stream of the class
PrintWriter
and connect it to a text file for writing as follows.
SYNTAX
PrintWriter
Output_Stream_Name
;
Output_Stream_Name
=
new
PrintWriter(
new
FileOutputStream(
File_Name
));
EXAMPLE
PrintWriter outputStream =
null
;
outputStream =
new
PrintWriter(
new
FileOutputStream("stuff.txt"));
After this, you can use the methods
println
and
print
to write to the file.
When used in this way, the
FileOutputStream
constructor, and thus the
PrintWriter
constructor invocation, can throw a
FileNotFoundException
, which is a kind of
IOException
.
