ByteBuffer compareTo() method in Java

Java 8Object Oriented ProgrammingProgramming

A buffer can be compared with another buffer using the method compareTo() in the class java.nio.ByteBuffer. This method returns a negative integer if the buffer is less than the given buffer, zero if the buffer is equal to the given buffer and a positive integer if the buffer is greater than the given buffer.

A program that demonstrates this is given as follows −


 Live Demo

import java.nio.*;
import java.util.*;
public class Demo {
   public static void main(String[] args) {
      int n = 5;
      try {
         ByteBuffer buffer1 = ByteBuffer.allocate(n);
         System.out.println("The first ByteBuffer is: " + Arrays.toString(buffer1.array()));
         ByteBuffer buffer2 = ByteBuffer.allocate(n);
         System.out.println("The second ByteBuffer is: " + Arrays.toString(buffer2.array()));
         int val = buffer1.compareTo(buffer2);
         if (val == 0)
            System.out.println("\nBoth the buffers are lexicographically equal");
         else if (val > 0)
            System.out.println("\nThe first buffer is lexicographically greater than the second buffer");
            System.out.println("\nThe second buffer is lexicographically greater than the first buffer");
      } catch (IllegalArgumentException e) {
         System.out.println("Error!!! IllegalArgumentException");
      } catch (ReadOnlyBufferException e) {
         System.out.println("Error!!! ReadOnlyBufferException");


The first ByteBuffer is: [1, 2, 3, 4, 5]
The second ByteBuffer is: [1, 2, 3, 4, 5]
Both the buffers are lexicographically equal
Published on 04-Mar-2019 08:11:13