IntBuffer compareTo() method in Java

A buffer can be compared with another buffer using the method compareTo() in the class java.nio.IntBuffer. 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 −

Example

 Live Demo

import java.nio.*;
import java.util.*;
public class Demo {
   public static void main(String[] args) {
      int n = 5;
      try {
         IntBuffer buffer1 = IntBuffer.allocate(n);
         buffer1.put(8);
         buffer1.put(1);
         buffer1.put(3);
         buffer1.put(7);
         buffer1.put(5);
         buffer1.rewind();
         System.out.println("The first IntBuffer is: " + Arrays.toString(buffer1.array()));
         IntBuffer buffer2 = IntBuffer.allocate(n);
         buffer2.put(8);
         buffer2.put(1);
         buffer2.put(3);
         buffer2.put(7);
         buffer2.put(5);
         buffer2.rewind();
         System.out.println("The second IntBuffer 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");
         else
            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 output of the above program is as follows −

Output

The first IntBuffer is: [8, 1, 3, 7, 5]
The second IntBuffer is: [8, 1, 3, 7, 5]
Both the buffers are lexicographically equal