java.lang.Long bitCount(long i)

Description

The Long.bitCount(long i) java method returns the number of one-bits in the two’s complement binary representation of the specified long value. This function is sometimes referred to as the population count.

Make a note that the bitCount method of Long class is static thus it should be accessed statically which means the we would be calling this method in this format:

Non static method is usually called by just declaring method_name(argument) however in this case since the method is static, it should be called by appending the class name as suffix. We will be encountering a compilation problem if we call the java bitCount method non statically.

Method Syntax

public static int bitCount(long i)

Method Argument

Data Type Parameter Description
long i the value whose bits are to be counted

Method Returns

The bitCount(long i) method of Long class returns the number of one-bits in the two’s complement binary representation of the specified long value.

Compatibility

Requires Java 1.5 and up

Java Long bitCount(long i) Example

Below is a simple java example on the usage of bitCount(long i) method of Long class.

Sample Output

Below is the sample output when you run the above example.

java Long bitCount(long i) example output

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