import java.text.*;
public class BenytDecimalFormat {
	public static void main(String[] arg)
	{
		DecimalFormat fmt1 = new DecimalFormat("###.#####");
		DecimalFormat fmt2 = new DecimalFormat("000.00");
		DecimalFormat fmt3 = new DecimalFormat("0.###E0");
		DecimalFormat fmt4 = new DecimalFormat("0.#E0");
		double tal = 1234.5678;
		System.out.println( fmt1.format(tal) );
		System.out.println( fmt2.format(tal) );
		System.out.println( fmt3.format(tal) );
		System.out.println( fmt4.format(tal) );
	}
}