Producer code

Producer.java

public class Producer implements Runnable {
    
    private Data data;
    private int id;

    public Producer(Data data, int id) {
        this.data = data;
        this.id = id;
    }

    @Override
    public void run() {
        for (int i = 0; i < 100; i++) {
            data.put(i);
            System.out.println("Producer #" + id + " put: " + i);

            try {
                Thread.sleep(200);
            } catch (InterruptedException e) { }
        }
    }
}