public class Consumer implements Runnable {
    private Clerk clerk; 
    
    public Consumer(Clerk clerk) { 
        this.clerk = clerk; 
    } 
    
    public void run() { 
        System.out.println("消費者開始消耗整數......"); 
        for(int i = 1; i <= 10; i++) { 
            try {
                clerk.getProduct(); 
            } catch (InterruptedException ex) {
                throw new RuntimeException(ex);
            }
        } 
    } 
 }