java round double to n decimal places code example

Example 1: double round java integer

int a = (int) Math.round(doubleVar);

Example 2: 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);
}
}