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Format floating point number in Java
Let’s say we have the following two values.
double val1 = 20.932; double val2 = 11.67;
Let us now format these floating-point numbers. Firstly, we are formatting euler’s number withMath.exp(). After that, we have also evaluated log. The %.3f you can see here is what we used for formatting the numbers.
System.out.printf("exp(%.3f) = %.3f%n", val1, Math.exp(val1));
System.out.printf("log = %.3f%n", val1, Math.log(val1));The following is an example where we have also shown other ways to format float in Java.
Example
public class Demo {
public static void main(String args[]) {
double val1 = 20.932;
double val2 = 11.67;
System.out.format("%f%n", val1);
System.out.printf("exp(%.3f) = %.3f%n", val1, Math.exp(val1));
System.out.printf("log = %.3f%n", val1, Math.log(val1));
System.out.format("%3f%n", val2);
System.out.format("%+3f%n", val2);
System.out.printf("pow(%.3f, %.3f) = %.3f%n", val1, val2, Math.pow(val1, val2));
}
}Output
20.932000 exp(20.932) = 1232117412.659 log = 20.932 11.670000 +11.670000 pow(20.932, 11.670) = 2593350237975675.500
Updated on: 26-Jun-2020
1K+ Views
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