Java convert double to 2 decimal places in string

/**
 * @author lautturi.com
 * Java example: format double with 2 decimal places in string 
 */
import java.text.DecimalFormat;

public class Lautturi {

	public static void main(String[] args) {

		double d = 3.14159265359;
		DecimalFormat df = new DecimalFormat("#.00");
		String str = df.format(d);
		System.out.println("double : " + str );
		
	}
}

output:

double : 3.14