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How to display numbers in scientific notation in Java?
To display number in scientific notation, create NumberFormat object first −
NumberFormat numFormat = newDecimalFormat();
Now, let’s say you need to format the minimum value of Integer −
int i = Integer.MIN_VALUE; System.out.println(i); numFormat = newDecimalFormat("0.######E0"); System.out.println(numFormat.format(i)); numFormat = newDecimalFormat("0.#####E0"); System.out.println(numFormat.format(i));
Above, we have used format() method of the NumberFormat class.
Example
import java.text.DecimalFormat; import java.text.NumberFormat; public class Demo { public static void main(String args[]) { NumberFormat numFormat = new DecimalFormat(); int i = Integer.MIN_VALUE; System.out.println(i); numFormat = new DecimalFormat("0.######E0"); System.out.println(numFormat.format(i)); numFormat = new DecimalFormat("0.#####E0"); System.out.println(numFormat.format(i)); double val = 0.37872; numFormat = new DecimalFormat("0.#####E0"); System.out.println(numFormat.format(val)); numFormat = new DecimalFormat("000000E0"); System.out.println(numFormat.format(val)); } }
Output
-2147483648 -2.147484E9 -2.14748E9 3.7872E-1 378720E-6
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