Rounding Numbers in Kotlin

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System.out.printf¶

System.out.printf("Pi: %.2f", 3.1415926)

Pi: 3.14

java.io.PrintStream@510906c3

String.format("%1.2f", 3.1415926)

3.14

"%1.2f".format(3.1415926)

3.14

import java.text.DecimalFormat

DecimalFormat("#.##").format(3.1415926)

3.14

kotlin.math.round(3.1415926)

3.0

kotlin.math.round(3.1415926 * 100) / 100.0

3.14

%classpath add mvn org.apache.commons commons-math3 3.6.1

import org.apache.commons.math3.util.Precision

Precision.round(3.1415926, 2)

3.14