code: import java.text.DecimalFormat;
  import java.text.NumberFormat;
  
  public class Format {
  	public static void main(String[] args){
  		NumberFormat numForm = new DecimalFormat();
  		numForm.setMinimumIntegerDigits(9);
  		//Maximum also available for Integer digits and Fraction digits
  		numForm.setGroupingUsed(false);//stops it from inserting commas
  		System.out.println(numForm.format(7.125));
  		
  		//example of Fraction digit options
  		numForm.setMinimumIntegerDigits(5);
  		numForm.setMinimumFractionDigits(5);
  		System.out.println(numForm.format(7.125));
  		numForm.setMinimumFractionDigits(0);
  		numForm.setMaximumFractionDigits(2);
  		System.out.println(numForm.format(7.125));
  		System.out.println(numForm.format(7.135));//rounds to even
  	}
  }
  