摘要：
package javalearn; public class SingleInstance { private volatile static SingleInstance instance; private SingleInstance(){ } public static SingleInstance getInstance(){ if ... 阅读全文
摘要：
package javalearn; import java.util.LinkedList; import java.util.Queue; public class ProducerConsumer { private static final int MAX = 5; ///////////////生产者 public static class Produce... 阅读全文