What is the doubleBuffer limit() method in Java?

import java.nio.*;
import java.util.*;
class HelloWorld {
    public static void main( String args[] ) {
        // initializing an double buffer by allocating memory
        DoubleBuffer buff = DoubleBuffer.allocate(5);
        // put values in doubleBuffer using put() method
        buff.put(23.2);
        buff.put(21.7);
        
        // printing the buffer, we can see position pos = 2
        // and limit lim = 5
        System.out.println("Buffer before applying limit: ");
        System.out.println(buff);
        // print the buffer array
        System.out.println(Arrays.toString(buff.array()));
  
        // applying limit using limit() method
         buff.limit(1);  
        // printing the buffer, we can now see that position pos = 1
        // and limit lim = 1
        System.out.println("Buffer after applying limit of 1: ");
        System.out.println(buff);
        // print the buffer array
        System.out.println(Arrays.toString(buff.array()));
  
    }
}