这是个线程同步的经典例子，源代码如下：

1. <span style=\"font-size:16px;\">package demo.thread;
3. /**
4. *经典生产者与消费者问题：生产者不断的往仓库中存放产品，消费者从仓库中消费产品。
5. *其中生产者和消费者都可以有若干个。仓库容量有限，库满时不能存放，库空时不能取产品
6. */
8. public class ProducersAndConsumers {
9. public static void main(String[] args) {
10. Storage storage = new Storage();
11. Thread consumer = new Thread(new Consumer(storage));
12. consumer.setName(\"消费者\");
13. Thread producer = new Thread(new Producer(storage));
14. producer.setName(\"生产者\");
15. consumer.start();
16. producer.start();
17. }
18. }
20. /**
21. * 消费者
22. */
23. class Consumer implements Runnable {
24. private Storage storage;
26. public Consumer(Storage storage) {
27. this.storage = storage;
28. }
30. @Override
31. public void run() {
32. storage.pop();
33. }
34. }
36. /**
37. * 生产者
38. */
39. class Producer implements Runnable {
40. private Storage storage;
42. public Producer(Storage storage) {
43. this.storage = storage;
44. }
46. @Override
47. public void run() {
48. Product product = new Product(\"090505105\", \"电话\");
49. storage.push(product);
50. }
52. }
54. /**
55. * 产品类
56. */
57. class Product {
58. private String id;// 产品id
59. private String name;// 产品名称
61. public Product(String id, String name) {
62. this.id = id;
63. this.name = name;
64. }
66. @Override
67. public String toString() {
68. return \"(产品ID：\" + id + \" 产品名称：\" + name + \")\";
69. }
71. public String getId() {
72. return id;
73. }
75. public void setId(String id) {
76. this.id = id;
77. }
79. public String getName() {
80. return name;
81. }
83. public void