Die einfache Art eine Textdatei einzulesen

[Thomas Darimont]

Hallo!

/**
 * 
 */
package de.tutorials;

import java.io.File;
import java.io.FileNotFoundException;
import java.util.Iterator;
import java.util.Scanner;

/**
 * @author Tom
 * 
 */
public class TextFileReaderExample {

    /**
     * @param args
     */
    public static void main(String[] args) throws Exception {
        TextFile textFile = new TextFile(new File("c:/doubleNumbers.txt"));
        for (String line : textFile) {
            System.out.println(line);
        }
        textFile.close();
    }

    static class TextFile implements Iterable<String> {
        Scanner scanner;

        public TextFile(File file) {
            try {
                this.scanner = new Scanner(file);
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            }
        }

        public Iterator<String> iterator() {
            return new Iterator<String>() {
                public boolean hasNext() {
                    return scanner.hasNextLine();
                }

                public String next() {
                    return scanner.nextLine();
                }

                public void remove() {
                    throw new UnsupportedOperationException();
                }
            };
        }

        public void close() {
            scanner.close();
        }
    }
}

Gruß Tom