packagecom.zcz.singleton;importjava.util.ArrayList;importjava.util.HashSet;importjava.util.List;importjava.util.Objects;importjava.util.Set;importjava.util.Vector;publicclassBuyTicket {publicstaticvoidmain(String[] args) {//用户人数intuserNumber = 10000;//保存用户线程Set<Thread> threadSet =newHash...
} }privateSingleton() { }privateSingleton(String name) {//带参数的私有构造函数nameList.add(name); }//返回实例对象publicstaticSingleton getInstance() { Random random=newRandom();//随机挑选一个实例indexOfInstance =random.nextInt(maxNumOfInstance);returninstanceList.get(indexOfInstance); }publicvoid...
// Java program to demonstrate // working of singleton() import java.util.*; class GFG { public static void main(String args[]) { String[] geekslist = { "1", "2", "4", "2", "1", "2", "3", "1", "3", "4", "3", "3" }; // Creating a list and removing // el...
packagecom.zcz.singleton;importjava.util.ArrayList;importjava.util.HashSet;importjava.util.List;importjava.util.Objects;importjava.util.Set;importjava.util.Vector;publicclassBuyTicket {publicstaticvoidmain(String[] args) {//用户人数intuserNumber = 10000;//保存用户线程Set<Thread> threadSet =newHash...
singleton()方法是一个 java.util.Collections 类方法。它在单个指定的元素上创建一个不可变的集合。此方法的一个应用是从集合中移除一个元素,如列表和集合。语法:public static Set singleton(T obj) and public static List singletonList(T obj) Parameters: obj : the sole object to be stored in the ...
java.util.Collections.singleton()方法是java.util.Collections类的方法。它在单个指定的元素上创建一个不可变的集合。此方法的一个应用是从Collection中删除一个元素,例如List和Set。 用法: public static Setsingleton(T obj) and public static List singletonList(T obj)参数:obj:the sole object to be stored ...
(下边这段话我只能简单的理解,翻译过来不好,所以保留原文,list 7是上边的代码,list 8是下边的 The code in Listing 7 doesn't work because of the current definition of the memory model. The Java Language Specification (JLS) demands that code within a synchronized block ...
For more on singletons, see the article titled "Exploring the Singleton Design Pattern" in the MSDN® library.Figure 2 Singleton.cs複製 // Singleton — list top-level visible windows // using System; sealed class Singleton { private Singleton() { } public static readon...
importjava.util.ArrayList;importjava.util.Arrays;importjava.util.Collections;importjava.util.List;/*java2s.com*/publicclassMainClass {publicstaticvoidmain(String args[]) { String init[] = {"One","Two","Three","One","Two","Three"}; List list1 =newArrayList(Arrays.asList(init)); List ...
// Singleton — list top-level visible windows // using System; sealed class Singleton { private Singleton() { } public static readonly Singleton TheInstance = new Singleton(); public void SayHello() { Console.WriteLine("hello,world"); } } class MyApp { // global command-...