Java ArrayBlockingQueue iterator() Method

The iterator() method of ArrayBlockingQueue class returns an iterator across the elements of this queue in a sequential manner.

The elements returned will follow order from first (head) to last (tail).

Syntax:

Parameters:

Specified By:

The iterator() method of ArrayBlockingQueue class is specified by:

iterator() method in interface Collection<E>.
iterator() method in interface Iterable<E>.
iterator() method in class AbstractCollection<E>.

Return Value:

The iterator() method returns an iterator across the elements of this queue in a sequential manner.

Example 1

import java.util.Iterator;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.BlockingQueue;
public class ArrayBlockingQueueIteratorExample1 {
    public static void main(String[] args) {
        int capacity =100;
        BlockingQueue<String> queue = new ArrayBlockingQueue<String>(capacity);
        queue.add("Reema");
        queue.add("Rahul");
        queue.add("Rita");
        queue.add("Ramesh");
        Iterator<String> iterator = queue.iterator();
        //Returns an iterator over the elements
        while(iterator.hasNext()){
            System.out.println(iterator.next());
        }
    }
}

Output:

Reema
Rahul
Rita
Ramesh

Example 2

import java.util.Iterator;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.BlockingQueue;
class Employee{
    private String f_name;
    private String l_name;
    private String email;
    public Employee(String f_name, String l_name, String email) {
        this.f_name = f_name;
        this.l_name = l_name;
        this.email = email;
    }
   public String toString(){
      return f_name+"  " +l_name+"  "+email;
    }
}
public class ArrayBlockingQueueIteratorExample2 {
    public static void main(String[] args) {
        Employee employee1 = new Employee("Reema     ", "Panda   ", "reemapanda18@gamil.com");
        Employee employee2 = new Employee("Geetanjali", "Sharma  ", "geetanjaliSharma28@gamil.com");
        Employee employee3 = new Employee("Vineet    ", "Tanjea  ", "VineetTanjea56@gamil.com");
        Employee employee4 = new Employee("Himanshu  ", "Bhardwaj", "himanshubhardwaj0604@gamil.com");
        int capacity = 100;
        BlockingQueue<Employee> queue = new ArrayBlockingQueue<Employee>(capacity);
        queue.add(employee1);
        queue.add(employee2);
        queue.add(employee3);
        queue.add(employee4);
        Iterator<Employee> iterator = queue.iterator();
        ////Returns an iterator over the elements
        while(iterator.hasNext()){
            System.out.println(iterator.next());
        }
    }
}

Output:

Reema       Panda     [email protected]
Geetanjali  Sharma    [email protected]
Vineet      Tanjea    [email protected]
Himanshu    Bhardwaj  [email protected]

Example 3

import java.util.Collections;
import java.util.Iterator;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.BlockingQueue;
public class ArrayBlockingQueueIteratorExample3 {
    public static void main(String[] args) {
        Integer[] val = {0, 1};
        int capacity = 100;
    BlockingQueue<Integer> queue = new ArrayBlockingQueue<Integer>(capacity);
        queue.add(71018);
        queue.add(8000);
        queue.add(1178);
        queue.add(1190);
    //Returns an iterator over the elements
        Iterator<Integer> iterator = queue.iterator();
        while(iterator.hasNext()){
            System.out.println(iterator.next());
            val[0] = Collections.max(queue);
            val[1] = Collections.min(queue);
        }
        System.out.println("Max number = "+ val[0]);
        System.out.println("Min number = "+ val[1]);
    }
}

Output:

71018
8000
1178
1190
Max number = 71018
Min number = 1178

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Java ArrayBlockingQueue iterator() Method

Syntax:

Parameters:

Specified By:

Return Value:

Example 1

Example 2

Example 3

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Java ArrayBlockingQueue iterator() Method

Syntax: