Double decimal formatting in Java

Question

I\'m having some problems formatting the decimals of a double. If I have a double value, e.g. 4.0, how do I format the decimals so that it\'s 4.00 instead?

Answer 1

You can use any one of the below methods

1. If you are using java.text.DecimalFormat

   DecimalFormat decimalFormat = NumberFormat.getCurrencyInstance(); 
   decimalFormat.setMinimumFractionDigits(2); 
   System.out.println(decimalFormat.format(4.0));
   

   OR

   DecimalFormat decimalFormat =  new DecimalFormat("#0.00"); 
   System.out.println(decimalFormat.format(4.0)); 
   

2. If you want to convert it into simple string format

   System.out.println(String.format("%.2f", 4.0)); 
   

All the above code will print 4.00