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Java - Long Class numberOfTrailingZeros() Method

Long class numberOfTrailingZeros() method: Here, we are going to learn about the numberOfTrailingZeros() method of Long class with its syntax and example. By Preeti Jain Last updated : March 20, 2024

Long class numberOfTrailingZeros() method

• numberOfTrailingZeros() method is available in java.lang package.
• numberOfTrailingZeros() method is used to returns the number of 0's bits following the rightmost one bit in the 2's complement denotation of the given parameter [value] of long type.
• numberOfTrailingZeros() method is a static method, it is accessible with the class name too and if we try to access the method with the class object then also we will not get an error.
• numberOfTrailingZeros() method does not throw an exception at the time of trailing zeros.

Syntax

    public static int numberOfTrailingZeros (long value);

Parameters

• long value – represents the long value to be parsed.

Return Value

The return type of this method is int, it returns the integer value based on the following cases,

• If the given argument is non-zero then, it returns the number of 0's bits followed the rightmost bit one bit in 2's complement of the given long value.
• Else, if the given argument is zero then, it returns the value 64 because it has no 1's bits in 2's complement of the given argument.

Example

// Java program to demonstrate the example 
// of numberOfTrailingZeros (long value) method of Long class

public class NumberOfTrailingZerosOfLongClass {
    public static void main(String[] args) {
        long value1 = 1296;
        long value2 = 0;

        // It returns the string representation of the given unsigned 
        // long value denoted by the argument in binary by calling
        // Long.toBinaryString(value1)
        System.out.println("Long.toBinaryString(value1): " + Long.toBinaryString(value1));

        // It returns the string representation of the given unsigned 
        // long value denoted by the argument in binary by calling
        // Long.toBinaryString(value2) 
        System.out.println("Long.toBinaryString(value2):" + Long.toBinaryString(value2));

        // It returns the number of 0's bits following the leftmost side 
        // one bit in the given argument 'value' by calling 
        // Long.numberOfTrailingZeros(value1)

        System.out.println("Long.numberOfTrailingZeros(value1): " + Long.numberOfTrailingZeros(value1));

        // It returns the value 64 because the value of the given argument is zero 
        System.out.println("Long.numberOfTrailingZeros(value2): " + Long.numberOfTrailingZeros(value2));
    }
}

Output

Long.toBinaryString(value1): 10100010000
Long.toBinaryString(value2):0
Long.numberOfTrailingZeros(value1): 4
Long.numberOfTrailingZeros(value2): 64