FileTool.java

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package itsudparis.tools;

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

/**
 *
 * @author DO.IT-SUDPARIS
 * Ce fichier sert à
 * + Lire le contenu d'un fichier: getContents
 * + Entrée: Objet File
 * + Sortie: une chaine de caractère
 */
public class FileTool {

    static public String getContents(File aFile) {
        //...checks on aFile are elided
        StringBuilder contents = new StringBuilder();

        try {
            //use buffering, reading one line at a time
            //FileReader always assumes default encoding is OK!
            BufferedReader input = new BufferedReader(new FileReader(aFile));
            try {
                String line = null; //not declared within while loop
				/*
                 * readLine is a bit quirky :
                 * it returns the content of a line MINUS the newline.
                 * it returns null only for the END of the stream.
                 * it returns an empty String if two newlines appear in a row.
                 */
                while ((line = input.readLine()) != null) {
                    contents.append(line);
                    contents.append(System.getProperty("line.separator"));
                }
            } finally {
                input.close();
            }
        } catch (IOException ex) {
            ex.printStackTrace();
        }

        return contents.toString();
    }
}