Format double value with ###E0 (exponent must be multiple of 3) in Java
Description
The following code shows how to format double value with ###E0 (exponent must be multiple of 3).
Example
/*w w w .j a v a 2 s. co m*/
import java.text.DecimalFormat;
public class Main {
public static void main(String[] argv) {
DecimalFormat formatter = new DecimalFormat("###E0");
String s = formatter.format(-1234.567); // -1.23E3
System.out.println(s);
s = formatter.format(-123.4567); // -123E0
System.out.println(s);
s = formatter.format(-12.34567); // -12.3E0
System.out.println(s);
s = formatter.format(-1.234567); // -12.3E0
System.out.println(s);
s = formatter.format(-.1234567); // -123E-3
System.out.println(s);
}
}
The code above generates the following result.
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