Working with Queue
Queues collect and returns objects in the order they were added. Queues also have a capacity. Here you create a waiting list Queue (specifically from an ArrayBlockingQueue) and add names to it. You see what happens when trying to add more names than the capacity allows.
Este exercício faz parte do curso
Data Types and Exceptions in Java
Instruções do exercício
- Import
ArrayBlockingQueuefor use in the application. - Construct a new
ArrayBlockingQueueofStrings with a capacity of 3 and set thewaitListvariable to it. - Add a new name,
"Tarah", towaitList. - Remove the first name on the
waitList.
Exercício interativo prático
Experimente este exercício completando este código de exemplo.
// Import ArrayBlockingQueue
____ ____.____.____.____;
public class GetInLine {
public static void main(String[] args) {
// Create an ArrayBlockingQueue of up to 3 names using parameterized constructor
____<____> waitList = new ____<____>(____);
waitList.offer("Sally");
waitList.offer("Benny");
// Add the name "Tarah"
waitList.____(____);
System.out.println(waitList);
waitList.offer("Letty");
System.out.println(waitList);
// Remove the first name
String first = waitList.____();
System.out.println(first);
waitList.offer("Letty");
System.out.println(waitList);
}
}