java 2 decimals

1String result = String.format("%.2f", value);

1DecimalFormat df = new DecimalFormat();
2df.setMaximumFractionDigits(2);
3System.out.println(df.format(decimalNumber));

1double test = 12.15;
2DecimalFormat df = new DecimalFormat("#.0");
3System.out.println(df.format(test)); // Console: 12.2
4// # - prints a digit if provided, nothing otherwise
5// . - indicates where to put the decimal seperator
6// 0 - prints a digit if provided, 0 otherwise

1double res = Math.round(a * 100) / 100;