Java Guava | IntMath.checkedPow(int b, int k) method with Examples
Last Updated :
01 Feb, 2019
checkedPow(int b, int k) is a method of Guava’s IntMath Class which accepts two parameters b and k and is used to find the k-th power of b.
Syntax:
public static int checkedPow(int b, int k)
Parameters: The method accepts two parameters, b and k. The parameter b is called base which is raised to the k-th power.
Return Value: This method returns the k-th power of b.
Exceptions: The method checkedPow(int b, int k) throws ArithmeticException if the k-th power of b overflows in signed int arithmetic.
Below examples illustrate the implementation of the above method:
Example 1:
import java.math.RoundingMode;
import com.google.common.math.IntMath;
class GFG {
public static void main(String args[])
{
int b1 = 5 ;
int k1 = 7 ;
int ans1 = IntMath.checkedPow(b1, k1);
System.out.println(b1 + " to the "
+ k1 + "th power is: "
+ ans1);
int b2 = 19 ;
int k2 = 4 ;
int ans2 = IntMath.checkedPow(b2, k2);
System.out.println(b2 + " to the " + k2
+ "th power is: "
+ ans2);
}
}
|
Output:
5 to the 7th power is: 78125
19 to the 4th power is: 130321
Example 2:
import java.math.RoundingMode;
import com.google.common.math.IntMath;
class GFG {
static int findPow( int b, int k)
{
try {
int ans = IntMath.checkedPow(b, k);
return ans;
}
catch (Exception e) {
System.out.println(e);
return - 1 ;
}
}
public static void main(String args[])
{
int b = 20 ;
int k = 25 ;
try {
findPow(b, k);
}
catch (Exception e) {
System.out.println(e);
}
}
}
|
Output:
java.lang.ArithmeticException: overflow
Reference: https://google.github.io/guava/releases/20.0/api/docs/com/google/common/math/IntMath.html#checkedPow-int-int-
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