[fireball2008]

Code:

import java.io.*;
import java.util.*;
import java.lang.Integer;
import java.io.PrintWriter;
import java.io.OutputStreamWriter;
public class fileWriter 
{
public void ok()throws IOException
{        BufferedWriter out = new BufferedWriter(new FileWriter("output"));
        out.write("aString");
        out.newLine();  // create a new line in file
        out.write("ok");
        out.close();
}
public static void main(String args[])throws IOException
{fileWriter f = new fileWriter();
f.ok();
}}

example of file writer
also shows how to create a new line in file