Java - Long Class reverse() Method

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

Long 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 long reverse(long value);

Parameters

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

Return Value

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

Example

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

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

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

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

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

Output

value: 1296
Long.toBinaryString(value): 10100010000
Long.reverse(value): 621496748577128448

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