importjava.util.Collections;importjava.util.List;importjava.util.Set;publicclassCollectionsDemo01{publicstaticvoidmain(Stringargs[]){List<String>allList=C...

importjava.util.Map;importjava.util.SortedMap;importjava.util.TreeMap;publicclassSortedMapDemo{publicstaticvoidmain(Stringargs[]){SortedMap<String,String>...

importjava.util.IdentityHashMap;importjava.util.HashMap;importjava.util.Set;importjava.util.Iterator;importjava.util.Map;classPerson{privateStringname;privatein...

importjava.util.HashMap;importjava.util.Map;importjava.util.Set;importjava.util.Iterator;publicclassForeachDemo02{publicstaticvoidmain(Stringargs[]){Map<Stri...

importjava.util.HashMap;importjava.util.Map;publicclassHashMapDemo01{publicstaticvoidmain(Stringargs[]){Map<String,String>map=null;//声明Map对象，其中key和value的类...

importjava.util.Vector;importjava.util.Enumeration;publicclassEnumerationDemo01{publicstaticvoidmain(Stringargs[]){Vector<String>all=newVector<String&g...

importjava.util.ArrayList;importjava.util.List;importjava.util.ListIterator;publicclassListIteratorDemo01{publicstaticvoidmain(Stringargsp[]){List<String>...

importjava.util.List;importjava.util.ArrayList;importjava.util.Iterator;publicclassIteratorDemo01{publicstaticvoidmain(Stringargs[]){List<String>all=newAr...

importjava.util.SortedSet;importjava.util.TreeSet;publicclassTreeSetDemo05{publicstaticvoidmain(Stringargs[]){SortedSet<String>allSet=newTreeSet<String...

importjava.util.Set;importjava.util.HashSet;classPerson{privateStringname;privateintage;publicPerson(Stringname,intage){this.name=name;this.age=age;}publicStrin...

importjava.util.HashSet;importjava.util.Set;publicclassHashSetDemo01{publicstaticvoidmain(Stringargs[]){Set<String>allSet=newHashSet<String>();allSe...

importjava.util.LinkedList;publicclassLinkedListDemo01{publicstaticvoidmain(Stringargs[]){LinkedList<String>link=newLinkedList<String>();link.add("A...

importjava.util.ArrayList;importjava.util.List;importjava.util.Collection;publicclassArrayListDemo01{publicstaticvoidmain(Stringargs[]){List<String>allLis...

1.创建类库项目你可以使用现有的.NET类库项目用于要打包的代码，或者创建一个简单的项目，.NETCORE2.1项目的类库如下所示：NugetDemo.classusingSystem;namespaceNugetTest{publicclassNugetDemo{publicstaticStringReturnInf...

 今天需要用到一个功能,获取主机名和本机的IP准备用API实现的,然后稍微查了一下,发现.net类库已经有了就在System.Net命名空间中的DNS类中GetHostName获取本地计算机的主机名。GetHostByAddress已重载。获取IP地址的DNS主机信息。   &n...