BigInteger testBit() Method in Java
prerequisite : BigInteger Basics
The java.math.BigInteger.testBit(index) method returns true if and only if the designated bit is set. This method Computes (this & (1<<n)) != 0).
public boolean testBit(int n)
Parameter: The method takes one parameter n of integer type which refers to the index of the bit that needs to be tested.
Return Value: The method returns true if and only if the designated bit is set else it will return false.
Exception: The method will throw an ArithmeticException when n is negative.
Input: BigInteger = 2300, n = 4 Output: true Explanation: Binary Representation of 2300 = 100011111100 bit at index 4 is 1 so set it means bit is set so method will return true Input: BigInteger = 5482549 , n = 1 Output: false
Below program illustrates the testBit() method of BigInteger.
The bit at index 3 of 2300 is set = true
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