JAVA

round the value of 2 decimals in java

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

    double a = 123.13698;
    double roundOff = Math.round(a*100)/100; //put attention to the parenthesis.

    System.out.println(roundOff);
}
}

round decimals in java string

package com.mkyong.math.rounding;

public class StringFormatExample {

  public static void main(String[] args) {

      double input = 1205.6358;

      System.out.println("salary : " + input);

      // round half-up, no way control
      // 1205.64
      System.out.println("salary : " + String.format("%.2f", input));

      // 1205.64
      System.out.format("salary : %.2f", input);

  }

}