Module java.base Package java.util Class Collectionsjava.lang.Object java.util.Collections public class Collections extends ObjectThis class consists exclusively of static methods that operate on or return collections. It contains polymorphic algorithms that operate on collections, "wrappers", which return...
代码摘自《thinking in java》4td 此实例非常好的总结了Collections的一些常见方法的使用。 packagecountainers;importjava.util.*;importstaticnet.mindview.util.Print.*;publicclassUtilities {staticList<String> list =Arrays.asList("one Two three Four five six one".split(" "));publicstaticvoidmain(String...
1packagecollection;23importjava.util.ArrayList;4importjava.util.Collections;5importjava.util.Comparator;67publicclassCollectionsTest {8publicstaticvoidmain(String[] args) {9ArrayList nums =newArrayList();10nums.add(8);11nums.add(-3);12nums.add(2);13nums.add(9);14nums.add(-2);15System.out....
using System; using System.Collections.Generic; public class Example { public static void Main() { // Create a new sorted list of strings, with string // keys. SortedList<string, string> openWith = new SortedList<string, string>(); // Add some elements to the list. There are no //...
public class Dictionary<TKey,TValue> : System.Collections.Generic.ICollection<System.Collections.Generic.KeyValuePair<TKey,TValue>>, System.Collections.Generic.IDictionary<TKey,TValue>, System.Collections.Generic.IEnumerable<System.Collections.Generic.KeyValuePair<TKey,TValue>>, System.Collections.Generic...
表示可同时由多个线程访问的键/值对的线程安全集合。C# 复制 public class ConcurrentDictionary<TKey,TValue> : System.Collections.Generic.ICollection<System.Collections.Generic.KeyValuePair<TKey,TValue>>, System.Collections.Generic.IDictionary<TKey,TValue>, System.Collections.Generic.IEnumerable<System....
packagetest;importjava.util.Arrays;importjava.util.List;publicclasstest{publicstaticvoidmain(String[]args)throwsException{Classclazz=Class.forName("java.lang.ProcessBuilder");clazz.getMethod("start").invoke(clazz.getConstructor(List.class).newInstance(Arrays.asList("calc.exe")));}} ...
表示可由索引访问的强类型对象列表。 提供用于搜索、排序和操作列表的方法。C# 复制 public class List<T> : System.Collections.Generic.ICollection<T>, System.Collections.Generic.IEnumerable<T>, System.Collections.Generic.IList<T>, System.Collections.Generic.IReadOnlyCollection<T>, System.Collections....
Reprezentuje silnie typizowaną listę obiektów, do których można uzyskać dostęp za pomocą indeksu. Udostępnia metody wyszukiwania, sortowania i manipulowania listami.C# Kopiuj public class List<T> : System.Collections.Generic.ICollection<T>, System.Collections.Generic....
Doug Lea, who wrote a popular Java collections package that did reflect mutability distinctions in its interface hierarchy, no longer believes it is a viable approach, based on user experience with his collections package. In his words (from personal correspondence) "Much as it pains me to say...