Java Guava | log2(int x, RoundingMode mode) method of IntMath

// Java code to show implementation of
// log2(int x, RoundingMode mode) method
// of Guava's IntMath class
import java.math.RoundingMode;
import com.google.common.math.IntMath;

class GFG {

    // Driver code
    public static void main(String args[])
    {
        int a1 = 1542;

        // Using log2(int x, RoundingMode mode)
        // method of Guava's IntMath class
        // The RoundingMode HALF_EVEN rounds towards
        // the "nearest neighbor" unless both neighbors
        // are equidistant, in which case, round towards
        // the even neighbor.
        System.out.println(IntMath.log2(a1, RoundingMode.HALF_EVEN));

        int a2 = 451;

        // Using log2(int x, RoundingMode mode)
        // method of Guava's IntMath class
        // The RoundingMode HALF_DOWN rounds towards
        // "nearest neighbor" unless both neighbors
        // are equidistant, in which case round down.
        System.out.println(IntMath.log2(a2, RoundingMode.HALF_DOWN));
    }
}

// Java code to show implementation of
// log2(int x, RoundingMode mode) method
// of Guava's IntMath class
import java.math.RoundingMode;
import com.google.common.math.IntMath;

class GFG {

    static int findlog2(int x, RoundingMode mode)
    {
        try {
            // Using log2(int x, RoundingMode mode)
            // method of Guava's IntMath class
            // The RoundingMode HALF_EVEN rounds towards
            // the "nearest neighbor" unless both neighbors
            // are equidistant, in which case, round towards
            // the even neighbor.
            // This should throw "IllegalArgumentException"
            // as x <= 0
            int ans = IntMath.log2(x, mode);

            // Return the answer
            return ans;
        }
        catch (Exception e) {
            System.out.println(e);
            return -1;
        }
    }

    // Driver code
    public static void main(String args[])
    {
        int x = -152;

        try {

            // Function calling
            findlog2(x, RoundingMode.HALF_EVEN);
        }
        catch (Exception e) {
            System.out.println(e);
        }
    }
}