how to find average round to 2 decimal places in java code example

Example 1: round off java 2 decimal places

class round{
    public static void main(String args[]){

    double a = 123.13698;
    double roundOff = Math.round(a*100)/100;

    System.out.println(roundOff);
}
}

Example 2: java round 2 decimal places

Math.round(input * 100.0) / 100.0;