package de.mpicbg.knime.scripting.matlab.ctrl; import java.util.concurrent.ArrayBlockingQueue; public class QueueTest { public static void main(String[] args) throws InterruptedException { ArrayBlockingQueue<Integer> queue = new ArrayBlockingQueue<>(2); queue.put(1); System.out.println("Queue size: " + queue.size()); System.out.println("Queue is empty: " + queue.isEmpty()); } }