Consumer.java

package onlyfun.caterpillar;
 
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......"); 

        // 消耗10個整數
        for(int i = 1; i <= 10; i++) { 
            try { 
                // 等待隨機時間
                Thread.sleep((int) (Math.random() * 3000)); 
            } 
            catch(InterruptedException e) { 
                e.printStackTrace(); 
            } 

            // 從店員處取走整數
            clerk.getProduct(); 
        } 
    } 
 }