TextOutputExample.java

import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.PrintWriter;

public class TextOutputExample {
    public static void main(String args[]) throws FileNotFoundException {
        PrintWriter out = new PrintWriter(new FileOutputStream("file.txt"));
        out.println("hi there, graham");
        out.println("how are you");
        out.close(); // important
        // Basically print writer prints to an in memory array
        // and when you hae enough data for a write to disk (suually a multiple of
        // 1024 bytes (characters), then 
        // print writer will actually push to disk
        // calling close actually calls "flush", which does the above.
        // close then closes the thing as well.
        // 
        // if you were in the middle of a program and wanted to get data
        // out to disk now (pretend it's a log file you're reloading)
        // then you would call flush.
        //
        // this may be too much info... but
        // java is a "garbage collected" language
        // meaning that every few seconds the language looks for everything
        // you aren't using anymore and fres up that memory for re-use
        // it also does this at the end of main
        // 
        // however, sometimes the program will exit before running everything
        // from a garbage collector...
        // and this can be bad becuase "close" is part of the
        // garbage collection on Print Writer
    }
}