import java.io.*;

public class DataOutputExample
{
	public static void main(String argv[])
	{
		try {
			FileOutputStream fout = new FileOutputStream(argv[0]);
			DataOutputStream dataOut = new DataOutputStream(fout);
			
			double data;
			
			for(int i=0; i<10; i++)
			{
				data = Math.random();
				System.out.println(data);
				dataOut.writeDouble(data);
			}
			
			dataOut.close();
			fout.close();
		}
		catch (IOException e)
		{
			System.err.print(e);
		}
	}
}