java string 2 decimal places code example

Example 1: java string format 2 decimal places

String strDouble = String.format("%.2f", 1.23456);

DecimalFormat df = new DecimalFormat("#.##");
String formatted = df.format(2.456345); 
System.out.println(formatted);

Example 2: java 2 decimals

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