Java Reference
In-Depth Information
Display 10.3
Reading Input from a Text File Using
Scanner
(part 1 of 2)
1
import
java.util.Scanner;
2
import
java.io.FileInputStream;
3
import
java.io.FileNotFoundException;
4
5
public class
TextFileScannerDemo
6{
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public static void
main(String[] args)
8
{
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System.out.println("I will read three numbers and a line");
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System.out.println("of text from the file morestuff.txt.");
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Scanner inputStream =
null
;
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try
15
{
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inputStream =
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new
Scanner(
new
FileInputStream("morestuff.txt"));
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}
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catch
(FileNotFoundException e)
20
{
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System.out.println("File morestuff.txt was not found");
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System.out.println("or could not be opened.");
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System.exit(0);
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}
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int
n1 = inputStream.nextInt( );
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int
n2 = inputStream.nextInt( );
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int
n3 = inputStream.nextInt( );
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inputStream.nextLine();
//To go to the next line
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String line = inputStream.nextLine( );
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System.out.println("The three numbers read from the file are:");
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System.out.println(n1 + ", " + n2 + ", and " + n3);
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System.out.println("The line read from the file is:");
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System.out.println(line);
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inputStream.close( );
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}
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}
F
ILE
morestuff.txt
This file could have been made with a
text editor or by another Java
program.
1 2
3 4
Eat my shorts.
