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java round double to 2 decimals

double roundOff = Math.round(a * 100.0) / 100.0;
// Or
double roundOff = (double) Math.round(a * 100) / 100;
// both have the same output.

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);
}
}

how to round double to 2 decimal places java

// calling the function round
round(200.3456, 2);

// Include this function in your class
public static double round(double value, int places) {
    if (places < 0) throw new IllegalArgumentException();

    BigDecimal bd = BigDecimal.valueOf(value);
    bd = bd.setScale(places, RoundingMode.HALF_UP);
    return bd.doubleValue();
}

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);

  }

}