Java Integer numberOfTrailingZeros() method with Examples

by Online Tutorials Library July 22, 2022

Java Integer numberOfTrailingZeros() Method

The numberOfTrailingZeros() method is a method of Integer class under java.lang package. This method returns the total number of zero bits following the lowest-order (“rightmost”) one’s-bit in the two’s complement binary representation of the specified integer value i.e. it converts int value to Binary then considers the right-most one bit and return total number of zero bits following it. In other words, if the specified integer value has no one-bits or is equal to zero in its two’s complement representation then it will return 32.

Exaplanation:

  Suppose, Integer Value = 52  Binary Equivalent = 110100  Lowest(Right-Most Bit) =  At position 3  numberOfTrailingZeros = 2  

Syntax:

Following is the declaration of numberOfTrailingZeros() method:

Parameter:

DataType	Parameter	Description	Required/Optional
int	i	It accepts integer value which returns lowest order bit on its 2’s complement.	Required

Returns:

The numberOfTrailingZeros() method returns the number of zero bits following the lowest-order (“rightmost”) one-bit in the two’s complement binary representation of the specified integer value, or 32 if the value is equal to zero.

Exceptions:

Compatibility Version:

Java 1.5 and above

Example 1

  public class IntegerNumberOfTrailingZerosExample1 {  public static void main(String[] args) {  System.out.println(“Trailing Zero’s: “+Integer.numberOfTrailingZeros(10));             }  }  

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Output:

Trailing Zero's: 1

Example 2

  public class IntegerNumberOfTrailingZerosExample2 {  public static void main(String[] args) {  int value = 56;  //Get the binary equivalent of this Integer value  System.out.print(“Binary equivalent: “+Integer.toBinaryString(value));  //Print the number of Trailing zeros  System.out.print(“nNumber of Trailing Zeros: “+Integer.numberOfTrailingZeros(value));      }  }  

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Output:

Binary equivalent: 111000  Number of Trailing Zeros: 3

Example 3

  import java.util.Scanner;  public class IntegerNumberOfTrailingZerosExample3 {  public static void main(String[] args) {  //Get Numeric value from Console  System.out.print(“Enter the desired Integer value: “);  Scanner readInput = new Scanner(System.in);  int value = readInput.nextInt();  readInput.close();  //Get the binary equivalent of this Integer value  System.out.print(“Binary equivalent: “+Integer.toBinaryString(value));  //Print the number of Trailing zeros  System.out.print(“nNumber of Trailing Zeros: “+Integer.numberOfTrailingZeros(value));      }  }  

Output:

Enter the desired Integer value: 52  Binary equivalent: 110100  Number of Trailing Zeros: 2

Example 4

  public class IntegerNumberOfTrailingZerosExample4 {  public static void main(String[] args) {    int num = -15;          System.out.print(“Input Number = ” + num);          // Returns the number of zero bits following the Lowest rightmost one-bit          System.out.print(“nNumber of Trailing Zeros = “+Integer.numberOfTrailingZeros(num));             }  }  

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Output:

Input Number = -15  Number of Trailing Zeros = 0

Example 5

  public class IntegerNumberOfTrailingZerosExample5 {  public static void main(String[] args) {  System.out.println(“Trailing Zero’s: “+Integer.numberOfTrailingZeros(0));             }  }  

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Output:

Trailing Zero's: 32

Next TopicparseInt() Method

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Java Integer numberOfTrailingZeros() method with Examples

Java Integer numberOfTrailingZeros() Method

Exaplanation:

Syntax:

Parameter:

Returns:

Exceptions:

Compatibility Version:

Example 1

Example 2

Example 3

Example 4

Example 5

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