java.lang.Long.reverseBytes() java.lang.Long.reverse() java.lang.Long.reverseBytes() java.lang.Long.reverseBytes() package com.codingdict; import java.lang.*; public class LongDemo { public static void main(String[] args) { long l = 210; System.out.println("Number = " + l); /* returns the string representation of the unsigned long value represented by the argument in binary (base 2) */ System.out.println("Binary = " + Long.toBinaryString(l)); /* returns the value obtained by reversing the bytes in the specified long value */ System.out.println("After reversing = " + Long.reverseBytes(l)); } } java.lang.Long.reverse() java.lang.Long.reverseBytes()