使用同步的java producerconsumer

Question

我编写了代码来实现生产者-消费者问题，它似乎运行良好，无需同步。可能吗

如何测试代码并检查它是否真的正常工作？我如何知道死锁是否会发生？现在，我没有打破循环（即，生产者不断插入，消费者不断在无限循环中消费）。我使用大小为3的循环队列（为了简单起见）作为共享资源

这是我的代码：

import java.util.*;

public class PCImpl implements Runnable 
{
Thread t;
QforPC qObj;

 public static void main(String[] args)
 {
     QforPC qObject=new QforPC();

     //These create 2 different objects! Each object has it's own thread of execution.
     //Synchronization is needed when 2 threads use the same object
    new PCImpl("Producer",qObject);
    new PCImpl("Consumer",qObject);
 }

 PCImpl(String name,QforPC qObj)
 {
     this.qObj=qObj;
     t=new Thread(this,name);
     t.start();
 }

 public void run()
 {
         if(Thread.currentThread().getName().equals("Producer"))
         {
             while(true)
             {
                  Random rgen=new Random();
                  int n=rgen.nextInt(100);
                  if(n!=0)
                              qObj.Producer(n);
                         try
                    {
                       Thread.sleep(200);
                     }
                      catch(InterruptedException e)
                    {

                    }
               }

            }


         if(Thread.currentThread().getName().equals("Consumer"))
         {
             while(true)
                  {
                 try
               {
                 Thread.sleep(1500);
               }
                catch(InterruptedException e)
               {
                  }
              qObj.Consumer();

              }
         }

  }
}



public class QforPC 
{
int[] q={0,0,0};
int r=0,f=0;
  public void Producer(int item)
     {

         if(r!=q.length && canProducer())
         {
             q[r]=item;
             System.out.println("The item inserted into the queue is:"+ item);
             r++;
         }
         if(r==q.length && f>0)
             r=0;
         else if(r==q.length && f==q.length)
         {
             r=0;
             f=0;
         }
     }

     public void Consumer()
     {
         int item;
         System.out.println("The value of isQueue empty is:"+ isEmpty());

         if(f!=q.length && isEmpty()==false)
         {
             System.out.println("Entered the consumer method");
             item=q[f];
             System.out.println("The item fetched from the queue is:"+item);
             q[f]=0;
             f++;
         }
         if(f==q.length && r<f)
             f=0;

     }

     public boolean isEmpty()
     {
         for(int k=0;k<q.length;k++)
         {
             if(q[k]==0 && k==q.length-1)
                 return true;

         }
         return false;
     }

     public boolean canProducer()
     {
         for(int k=0;k<q.length;k++)
         {
                 if(q[k]==0)
                 return true;

         }
         return false;
     }
}