import java.util.*; // Main class // IterateTheHashSet class GFG { // Main driver method public static void main(String[] args) { // Creating an empty HashSet of string entries HashSet<String> hs = new HashSet<String>(); // Adding elements to above Set // using add() method h...
4 HashMap<String, Object> hashMap = new HashMap<>(); 5 HashSet<String> hashSet = new HashSet<>(); 6 LinkedHashMap<String, Object> linkedHashMap = new LinkedHashMap<>(); 7 LinkedHashSet<String> linkedHashSet = new LinkedHashSet<>(); 8 hashSet.add("java"); 9 hashMap.put("...
importjava.util.HashSet; importjava.util.List; publicclassStringToHashSetExample{ publicstaticvoidmain(String[]args){ Stringstr="1,2,3,4,2,5"; // split the string by comma String[]strParts=str.split(","); // convert array to the List using asList method List<String>listParts=Arrays....
externally. This is typically accomplished by synchronizing on some object that naturally encapsulates the set. If no such object exists, the set should be "wrapped" using theCollections.synchronizedSetmethod. This is best done at creation time, to prevent accidental unsynchronized access to the set...
abs.add("Geeks");// UsingtoString() methodSystem.out.println(abs.toString()); } } 輸出: [Welcome, To, Geeks, For] 示例2: // Java program to demonstrate// LinkedHashSettoString() methodimportjava.util.*;publicclasscollection{publicstaticvoidmain(String args[]){// Creating an Empty Linke...
("Geek");// Print and display all elements inside the objectSystem.out.println("Elements in HashSet = "+gfg);// Using Collection.max() Method to find// max string in HashSetObjectobj=Collections.max(gfg);// Display Maximum element in a HashSetSystem.out.println("Maximum element :"+...
* copy and techniques to deep clone Collection by iterating over them. *@authorhttp://javarevisited.blogspot.com*/publicclassCollectionCloningTest {privatestaticfinalLogger logger =LoggerFactory.getLogger(CollectionCloningclass);publicstaticvoidmain(String args[]) {//deep cloning Collection in JavaCollec...
// Java program to sort a HashSetimport java.util.*;publicclassGFG{publicstaticvoidmain(String args[]){// Creating a HashSetHashSet<String>set=newHashSet<String>();// Adding elements into HashSet using add()set.add("geeks");set.add("practice");set.add("contribute");set.add("ide"...
.NET Collection 函数库的 HashSet、SortedSet 这两个泛型的类,都实现了 System.Collections.Generic.ISet 接口;但 Java 早在 1.2 (或更早) 之前的版本,即已提供了实现这两种数据结构的同名类[10],且还有更严谨的 TreeSet (里面存储的项,连类型都必须一致。当年还没有泛型)。
下面的程序说明了LinkedHashSet.toArray(arr[])方法的工作。程序1:当数组的大小与LinkedHashSet相同时// Java code to illustrate toArray(arr[]) import java.util.*; public class LinkedHashSetDemo { public static void main(String args[]) { // Creating an empty LinkedHashSet LinkedHashSet<String>...