How can I round this result to 2 decimal places code example-CodePudding

How can i round off this particular code to show only 2 decimal places.

double sum = ((3.141592654/4*(tbmODInput)*(tbmODInput))-(3.141592654/4*(pipeODInput)*(pipeODInput)))*muckUpInput;

volume_per_meter_result.setText(String.valueOf(sum));

CodePudding user response：

Kotlin

val value = 3.14159265358979323

// round to 2 decimal: 3.14
val formated = "Rounded is: %.2f".format(value)

Java

double value = 3.14159265358979323;

// round to 2 decimal: 3.14
String formated = String.format("Rounded is: %.2f", value);

CodePudding user response：

For Java:

double value = 3.141592654;

String formated = String.format("Rounded is: %.2f", value);

For Kotlin:

val value = 3.141592654

val formattedText= "Rounded is: %.2f".format(value)