Java rounded so that Java retains 2 decimal places for example

package com.icer.test;


public class MyRound {
    public static void main(String[] args) {
        double num = 3.23562;
        double number = 0;
        number = new MyRound().myRound(num,2);
        System.out.println("after:" + number);
    }

    private double myRound(double number,int index){
        double result = 0;
        double temp = Math.pow(10, index);
        result = Math.round(number*temp)/temp;
        return result;
    }
}

Because the round function in Java removes the decimal place after processing the small number, it multiplies 100 and then divides by 100.0.
Make sure the output is a decimal number. Otherwise it will be truncated to an integer