How can I utilize Java for round to 2 decimal places?
I am currently developing a program that is a financial application that can handle currency conversions. How can I utilize Java to round a floating-point number to two decimal places before providing the final currency value? Describe the steps for me.
There are two methods present for Java round to 2 decimals in the whole context of Java. Here are the methods following:-
Using “DecimalFormat”
Import java.text.DecimalFormat;
Public class CurrencyConverter {
Public static void main(String[] args) {
Double amount = 123.45678; // Replace with your amount
DecimalFormat df = new DecimalFormat(“#.##”); // Define the decimal format
Df.setRoundingMode(RoundingMode.HALF_UP); // Set the rounding mode
Double roundedAmount = Double.parseDouble(df.format(amount)); // Round the amount
System.out.println(“Rounded amount: “ + roundedAmount);
}
}Using “string.format()”
Public class CurrencyConverter {
Public static void main(String[] args) {
Double amount = 123.45678; // Replace with your amount
Double roundedAmount = Math.round(amount * 100.0) / 100.0; // Round the amount
System.out.println(“Rounded amount: “ + roundedAmount);
}
}These methods help you round a floating-point to 2 decimal places easily in the context of Java. Thus, it offers accuracy for various input values. You can also adjust the “amount” variable according to your requirements and values.