Jun Araki’s Blog

Recently I regularly use Java in some classes and my research. In particular, I often implement a similar code to read a text file for the purpose of some text processing. So I will attach the trivial code to this post for future reference. I confirmed that it works with Java 1.6.0_16.

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.FileNotFoundException;
import java.io.IOException;

class SomeClass {
    public static void readFromFile(String filename) {
        BufferedReader fin = null;

        try {
            fin = new BufferedReader(new FileReader(filename));
            String line = null;
            while ((line = fin.readLine()) != null) {
                // Do something.
            }
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (fin != null) fin.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }

    public static void main(String args[]) {
        readFromFile("sample.txt");
    }
}

Incidentally I have used BufferedReader rather than BufferedInputStream simply because BufferedReader is more suitable to the text processing that I need to do right now.

This entry was posted on Saturday, February 20th, 2010 at 9:49 pm and is filed under Software. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.