The divide(int p, int q, RoundingMode mode) method of Guava’s IntMath Class accepts three parameters and calculates the result of dividing first parameter by second parameter, rounded according to the rounding mode specified by the third parameter.
Syntax:
public static int divide(int p,
int q,
RoundingMode mode)
Parameters: The method takes 3 parameters, where p and q are ints and mode is a specified rounding mode.
Return Value: This method returns division of first parameter by second parameter, rounded according to the rounding mode specified by the third parameter.
Exceptions: The method throws ArithmeticException if:
- q == 0, or
- mode == UNNECESSARY and p is not an integer multiple of q.
Enum RoundingMode
| Enum Constant | Description |
|---|---|
| CEILING | Rounding mode to round towards positive infinity. |
| DOWN | Rounding mode to round towards zero. |
| FLOOR | Rounding mode to round towards negative infinity. |
| HALF_DOWN | Rounding mode to round towards “nearest neighbor” unless both neighbors are equidistant, in which case round down. |
| HALF_EVEN | Rounding mode to round towards the “nearest neighbor” unless both neighbors are equidistant, in which case, round towards the even neighbor. |
| HALF_UP | Rounding mode to round towards “nearest neighbor” unless both neighbors are equidistant, in which case round up. |
| UNNECESSARY | Rounding mode to assert that the requested operation has an exact result, hence no rounding is necessary. |
| UP | Rounding mode to round away from zero. |
Below examples illustrate the implementation of above method:
Example 1 :
// Java code to show implementation of// divide(int p, int q, RoundingMode mode)// method of Guava's IntMath classimport java.math.RoundingMode;import com.google.common.math.IntMath; class GFG { // Driver code public static void main(String args[]) { int dividend1 = 55; int divisor1 = 10; // Using divide(int p, int q, // RoundingMode mode) // method of Guava's IntMath class int quotient1 = IntMath.divide(dividend1, divisor1, RoundingMode.HALF_DOWN); System.out.println(quotient1); int dividend2 = 55; int divisor2 = 10; // Using divide(int p, int q, // RoundingMode mode) // method of Guava's IntMath class int quotient2 = IntMath.divide(dividend2, divisor2, RoundingMode.CEILING); System.out.println(quotient2); }} |
Output:
5 6
Example 2 :
// Java code to show implementation of// divide(int p, int q, RoundingMode mode)// method of Guava's IntMath class import java.math.RoundingMode;import com.google.common.math.IntMath; class GFG { static int findDiv(int dividend, int divisor, RoundingMode mode) { try { // Using divide(int p, int q, // RoundingMode mode) // method of Guava's IntMath class int quotient = IntMath.divide(dividend, divisor, RoundingMode.HALF_DOWN); // Return the answer return quotient; } catch (Exception e) { System.out.println(e); return -1; } } // Driver code public static void main(String args[]) { int dividend = 32; int divisor = 0; try { // Function calling findDiv(dividend, divisor, RoundingMode.HALF_EVEN); } catch (Exception e) { System.out.println(e); } }} |
Output:
java.lang.ArithmeticException: / by zero
