Ava Double: Rounding and setting the number of decimal places

public static void Main (string[] args) {   //1. First multiply and then round, then divide;           Double d = 62.31060027198647;          Double D2 = Math.Round (d*100)/100.0;         System.out.println ("Divide by math": "+ D2);          2. Rounding with the number of decimal places is accomplished by BigDecimal's Setscale (), which is converted to a BigDecimal object.       Below this feasible         BigDecimal bd = new BigDecimal (d);         BigDecimal Bd2 = Bd.setscale (2, bigdecimal.round_half_up);        System.out.println ("obtained by Bigdecimal.setscale:" + bd2);         3.         DecimalFormat df = new DecimalFormat ("#.##") of string returned by Decimalformat.format;         System.out.println ("obtained by Decimalformat.format:" + df.format (d));          4. Through String.Format         System.out.println ("Through StringFormat:" + String.Format ("%.2f", d));     

After the completion of math to do division: 62.31//Through the Bigdecimal.setscale obtained: 62.31//Through the Decimalformat.format obtained: 62.31//through the stringformat:62.31  

The second type of personal advice

Ava Double: Rounding and setting the number of decimal places