Java - Integer Class reverse() Method

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

Integer class reverse() method

  • reverse() method is available in java.lang package.
  • reverse() method is used to returns the value generated by reversing the order of bits in binary 2's complement denotation of the given argument.
  • reverse() 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.
  • reverse() method does not throw an exception at the time of reversing the order of bits.

Syntax

public static int reverse(int value);

Parameters

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

Return Value

The return type of this method is int, it returns an integer value generated by reversing the bits order in 2's complement of the given integer value.

Example

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

public class ReverseOfIntegerClass {
    public static void main(String[] args) {
        int value = 1296;

        // Display value
        System.out.println("value:" + value);

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

        // It returns the value generated by reversing the 
        // order of the bits in the given argument value 
        // by calling Integer.reverse(value)
        System.out.println("Integer.reverse(value): " + Integer.reverse(value));
    }
}

Output

value:1296
Integer.toBinaryString(value): 10100010000
Integer.reverse(value): 144703488

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