in ein txt file schreiben

import java.io.*;

public class Write {

    public static void main(String[] args) throws IOException {
	File outputFile = new File("outagain.txt");
        FileWriter out = new FileWriter(outputFile);
        String[] data = String[3]
        data[0] = "eins; zwei; drei;";
        data[1] = "eins; zwei; drei;";
        data[2] = "eins; zwei; drei;";
        for(int i = 0; i < data.length; i++) {
              out.writeln(data[i]);
        }        
        out.close();
    }
}

FileWriter

public FileWriter(String fileName,
                  boolean append)
           throws IOException

    Constructs a FileWriter object given a file name with a boolean indicating whether or not to append the data written.

Parameters:
    fileName - String The system-dependent filename.
    append - boolean if true, then data will be written to the end of the file rather than the beginning. 
Throws:
    IOException - if the named file exists but is a directory rather than a regular file, does not exist but cannot be created, or cannot be opened for any other reason

public static void main(String[] args) throws IOException {
	File outputFile = new File("outagain.txt",true);