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Java - Integer Class numberOfTrailingZeros() Method

Integer class numberOfTrailingZeros() method: Here, we are going to learn about the numberOfTrailingZeros() method of Integer class with its syntax and example. By Preeti Jain Last updated : March 18, 2024

Integer 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 integer 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 (int value);

Parameters

• int value – represents the integer value to be parsed.

Return Value

The return type of this method is int, 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 integer value. Else, if the given argument is zero then, it returns the value 0 because it has no 1 ‘s bits in 2's complement of the given argument.

Example

// Java program to demonstrate the example 
// of numberOfTrailingZeros (int value) method of
// Integer class

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

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

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


        // It returns the number of 0's bits following the leftmost side 
        // one bit in the given argument 'value' by calling 
        // Integer.numberOfTrailingZeros(value1)
        System.out.println("Integer.numberOfTrailingZeros(value1): " + Integer.numberOfTrailingZeros(value1));

        // It returns the value 32 because the value of 
        // the given argument is zero 
        System.out.println("Integer.numberOfTrailingZeros(value2): " + Integer.numberOfTrailingZeros(value2));
    }
}

Output

Integer.toBinaryString(value1): 10100010000
Integer.toBinaryString(value2): 0
Integer.numberOfTrailingZeros(value1): 4
Integer.numberOfTrailingZeros(value2): 32