Buffer hasRemaining() methods in Java with Examples

The hasRemaining() method of java.nio.Buffer class is used to tell whether there are any elements between the current position and the limit.

Syntax:

public final boolean hasRemaining()

Returns: This method will return true if, and only if, there is at least one element remaining in this buffer.



Below are the examples to illustrate the hasRemaining() method:

Examples 1:

filter_none

edit
close

play_arrow

link
brightness_4
code

// Java program to demonstrate
// hasRemaining() method
  
import java.nio.*;
import java.util.*;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // Declaring the capacity of the ByteBuffer
        int capacity = 10;
  
        // creating object of bytebuffer
        // and allocating size capacity
        ByteBuffer bb = ByteBuffer.allocate(capacity);
  
        // putting the value in bytebuffer
        bb.put((byte)10);
        bb.put((byte)20);
        bb.rewind();
  
        // Typecast bytebuffer to Buffer
        Buffer buffer = (Buffer)bb;
  
        // checking buffer is backed by array or not
        boolean isRemain = buffer.hasRemaining();
  
        // checking if else condition
        if (isRemain)
            System.out.println("there is at least one "
                               + "element remaining "
                               + "in this buffer");
        else
            System.out.println("there is no "
                               + "element remaining "
                               + "in this buffer");
    }
}

chevron_right






                        filter_none









Output:


there is at least one element remaining in this buffer





Examples 2: 











                                    filter_none




                                    edit

                                    close




                                    play_arrow




                                    link

                                    brightness_4

                                    code
                                




















// Java program to demonstrate 


// hasRemaining() method 


  


import java.nio.*; 


import java.util.*; 


  


public class GFG { 


    public static void main(String[] args) 


    { 


  


        // Declaring the capacity of the ByteBuffer 


        int capacity = 0; 


  


        // creating object of bytebuffer 


        // and allocating size capacity 


        ByteBuffer bb = ByteBuffer.allocate(capacity); 


  


        // Typecast bytebuffer to Buffer 


        Buffer buffer = (Buffer)bb; 


  


        // checking buffer is backed by array or not 


        boolean isRemain = buffer.hasRemaining(); 


  


        // checking if else condition 


        if (isRemain) 


            System.out.println("there is at least one "


                               + "element remaining"


                               + " in this buffer"); 


        else


            System.out.println("there is no "


                               + "element remaining"


                               + " in this buffer"); 


    } 


} 



















                        chevron_right







                        filter_none









Output:


there is no element remaining in this buffer





Reference: https://docs.oracle.com/javase/9/docs/api/java/nio/Buffer.html#hasRemaining–



          
          
          
          

            

    

        My Personal Notes
        arrow_drop_up
    

    

        
        

            
            
        

    


Recommended Posts:
RohitPrasad3
Check out this Author's contributed articles.
If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.
Please Improve this article if you find anything incorrect by clicking on  the "Improve Article" button below.