Java ArrayDeque.peek()
Syntax
ArrayDeque.peek() has the following syntax.
public E peek()
Example
In the following code shows how to use ArrayDeque.peek() method.
/*w w w .jav a2 s .c o m*/
import java.util.ArrayDeque;
import java.util.Deque;
public class Main {
public static void main(String[] args) {
Deque<Integer> deque = new ArrayDeque<Integer> (8);
deque.add(25);
deque.add(2);
deque.add(1);
deque.add(18);
// this will retrieve head of the queue
int retval = deque.peek();
System.out.println("Retrieved Element is " + retval);
System.out.println(deque);
}
}
The code above generates the following result.
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