How to round bigdecimal

 

java rounding

package Test; import java.math.BigDecimal; //Introduce this package public class Test { public static void main(String[] args) { double i = 3.856; // Round off decimals System.out.println(" Round off decimals: Math.floor(3.856)=" + (int) Math.floor(i)); // Rounding up System.out.println("Rounding up and down: (3.856)=" + new BigDecimal(i).setScale(0, BigDecimal.ROUND_HALF_UP)); // Rounding to two decimal places System.out.println("Rounding to integer: (3.856)=" + new BigDecimal(i).setScale(2, BigDecimal.ROUND_HALF_UP)); // Round up, take the upper limit System.out.println("Round up: Math.ceil(3.856)=" + (int) Math.ceil(i)); // Round off decimals System.out.println(" Round off decimals: Math.floor(-3.856)=" + (int) Math.floor(-i)); // Round off and round off System.out .println("Round up: (-3.856)=" + new BigDecimal(-i).setScale(0, BigDecimal.ROUND_HALF_UP)); // Rounding to two decimal places System.out.println("Rounding to whole: (-3.856)=" + new BigDecimal(-i).setScale(2, BigDecimal.ROUND_HALF_UP)); // Round up, take the upper limit System.out.println("Round (-3.856)=" + (int) Math.ceil(-i)); } }

// print the result

Round off decimals: Math.floor(3.856)=3
Round off: (3.856)=4
Round off: (3.856)=3.86 Round off
: Math.ceil(3.856) =4 Round off
decimals: Math .floor(-3.856)=-4
rounding: (-3.856)=-4 rounding: (-3.856)
=-3.86
rounding (-3.856)=-3 maolinquan