/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
import java.math.BigDecimal;
import java.math.RoundingMode;
import java.text.NumberFormat;
import java.text.ParseException;
import java.util.Locale;
 
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		String numero = "199,99";
		BigDecimal bg = new BigDecimal(converte(numero)).setScale(2, RoundingMode.HALF_EVEN);
		System.out.println(bg);
	}
 
	public static double converte(String arg) throws ParseException{
		//obtem um NumberFormat para o Locale default (BR)
		NumberFormat nf = NumberFormat.getNumberInstance(new Locale("pt", "BR"));
		//converte um número com vírgulas ex: 2,56 para double
		double number = nf.parse(arg).doubleValue();
		return number;
	}
}

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