ConcurrentLinkedQueue size() method in Java
The size() method of ConcurrentLinkedQueue is used to returns number of elements that this ConcurrentLinkedQueue contains.
Syntax:
public int size()
Returns: This method number of elements in this ConcurrentLinkedQueue.
Below programs illustrate size() method of ConcurrentLinkedQueue:
Example 1:
import java.util.concurrent.*;
public class GFG {
public static void main(String[] args)
{
ConcurrentLinkedQueue<Integer>
queue = new ConcurrentLinkedQueue<Integer>();
queue.add( 4353 );
queue.add( 7824 );
queue.add( 78249 );
queue.add( 8724 );
System.out.println( "ConcurrentLinkedQueue: " + queue);
int size = queue.size();
System.out.println( "Size of ConcurrentLinkedQueue: " + size);
}
}
|
Output:
ConcurrentLinkedQueue: [4353, 7824, 78249, 8724]
Size of ConcurrentLinkedQueue: 4
Example 2:
import java.util.concurrent.*;
public class GFG {
public static void main(String[] args)
{
ConcurrentLinkedQueue<String>
queue = new ConcurrentLinkedQueue<String>();
queue.add( "Aman" );
queue.add( "Amar" );
queue.add( "Sanjeet" );
queue.add( "Rabi" );
System.out.println( "ConcurrentLinkedQueue: " + queue);
int size = queue.size();
System.out.println( "Size of ConcurrentLinkedQueue: "
+ size);
queue.poll();
queue.poll();
size = queue.size();
System.out.println( "After 2 removal of elements\n"
+ "ConcurrentLinkedQueue: " + queue);
System.out.println( "Size of ConcurrentLinkedQueue: "
+ size);
}
}
|
Output:
ConcurrentLinkedQueue: [Aman, Amar, Sanjeet, Rabi]
Size of ConcurrentLinkedQueue: 4
After 2 removal of elements
ConcurrentLinkedQueue: [Sanjeet, Rabi]
Size of ConcurrentLinkedQueue: 2
Reference: https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/ConcurrentLinkedQueue.html#size–
Last Updated :
26 Nov, 2018
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