import java.text.DecimalFormat;
public class Main {
public static void main(String[] args) {
double numberToRound = 12345.6789;
DecimalFormat df = new DecimalFormat("0.000");
System.out.println("Rounded number = " + df.format(numberToRound));
System.out.println(String.format("Rounded number = %.3f", numberToRound));
}
}
/*
Rounded number = 12345.679
*/