import java.io.*;

class TextPrint {
    public static void main(String[] args) throws IOException {
        PrintWriter out = new PrintWriter("output.txt");
        
        out.println("This is my text file.");
        for( int i=0; i<20; i++ ) {
            out.printf( "%d\n", i );
        }
        
        out.close();
    }
}