How to set Precision for Double values in Java?
Given a double value val, the task is to set its precision value to a specific decimal places.
Examples:
Input: val = 1 Output: 1.0000 Upto 4 decimal places Input : 12.5 Output : 12.500000 Upto 6 decimal places
Approach: Using String.format()
We can use String.format() method to format the decimal number to some specific format.
Syntax:
String.format("%.Df", decimalValue);
where D is the number required number of Decimal places.
Below is the implementation of the above approach:
Java
import java.io.*; import java.lang.*; class GFG { public static void main(String[] args) { double a = 0.9; // Setting the precision to 20 places System.out.println( String.format("%.20f", a)); double b = 1; // Setting the precision to 5 places System.out.println( String.format("%.5f", b)); } } |
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Output:
0.99999999999999990000 1.00000
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