Untitled

Formatting double to 2 decimals doesn't work
3.499999999999999

3.50

DecimalFormat df = new DecimalFormat("0.00");
        double result = Double.valueOf(df.format(input));
        System.out.println(answer);

public double round(double input)
    {
        int decimalPlace = 2;
        BigDecimal bd = new BigDecimal(input);
        bd = bd.setScale(decimalPlace,BigDecimal.ROUND_UP);

        return (bd.doubleValue());
    }

3.5

DecimalFormat df = new DecimalFormat("0.00");
    System.out.println(df.format(input));

System.out.printf("%.2f%n", 3.5);

3.50