BlockingDeque put() method in Java with Examples
Last Updated :
01 Oct, 2019
The put(E e) method of BlockingDeque inserts the specified element into the queue represented by this deque (in other words, at the tail of this deque). If the Deque is capacity restricted, then it will wait for the space to become available.
Syntax:
public void put(E e)
Parameters: This method accepts a mandatory parameter e which is the element to be inserted at the end of the BlockingDeque.
Returns: This method does not return anything.
Exceptions: The program throws two exceptions as shown below:
- NullPointerException – if the specified element is null
- InterruptedException – if interrupted while waiting
Note: The put() method of BlockingDeque has been inherited from the LinkedBlockingDeque class in Java.
Below programs illustrate put() method of BlockingDeque:
Program 1:
import java.util.concurrent.LinkedBlockingDeque;
import java.util.concurrent.BlockingDeque;
import java.util.*;
public class GFG {
public static void main(String[] args)
throws InterruptedException
{
BlockingDeque<Integer> BD
= new LinkedBlockingDeque<Integer>();
BD.put( 7855642 );
BD.put( 35658786 );
BD.put( 5278367 );
BD.put( 74381793 );
System.out.println( "Blocking Deque: " + BD);
}
}
|
Output:
Blocking Deque: [7855642, 35658786, 5278367, 74381793]
Program 2:
import java.util.concurrent.LinkedBlockingDeque;
import java.util.concurrent.BlockingDeque;
import java.util.*;
public class GFG {
public static void main(String[] args)
throws InterruptedException
{
BlockingDeque<Integer> BD
= new LinkedBlockingDeque<Integer>();
BD.put( 7855642 );
BD.put( 35658786 );
BD.put( 5278367 );
BD.put( null );
System.out.println( "Blocking Deque: " + BD);
}
}
|
Output:
Exception in thread "main" java.lang.NullPointerException
at java.util.concurrent.LinkedBlockingDeque.putLast(LinkedBlockingDeque.java:390)
at java.util.concurrent.LinkedBlockingDeque.put(LinkedBlockingDeque.java:649)
at GFG.main(GFG.java:24)
Program 3:
import java.util.concurrent.LinkedBlockingDeque;
import java.util.concurrent.BlockingDeque;
import java.util.*;
public class GFG {
public static void main(String[] args)
throws InterruptedException
{
BlockingDeque<Integer> BD
= new LinkedBlockingDeque<Integer>( 3 );
BD.put( 7855642 );
BD.put( 35658786 );
BD.put( 5278367 );
BD.put( 4356789 );
System.out.println( "Blocking Deque: " + BD);
}
}
|
Output:
Max real time limit exceeded due to either by heavy load on server or by using sleep function
Reference: https://docs.oracle.com/javase/7/docs/api/java/util/concurrent/BlockingDeque.html#put(E)
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