JAVA

how to format numbers in java

double value = 4.2352989244d;
String.format("%.2f", value) //output "4.24");
String.format("%.3f", value)//output("4.235");

number format java

i will refer this site just read it and you will understand everything
i hope this help:https://zetcode.com/java/numberformat/

number format java

double r = 5.1234;
System.out.println(r); // r is 5.1234

int decimalPlaces = 2;
BigDecimal bd = new BigDecimal(r);

// setScale is immutable
bd = bd.setScale(decimalPlaces, BigDecimal.ROUND_HALF_UP);
r = bd.doubleValue();

System.out.println(r); // r is 5.12

Number Formating in java

Number Formatting