示例2:使用迭代器遍历 importjava.util.LinkedHashSet;importjava.util.Iterator;publicclassLinkedHashSetIteratorExample{publicstaticvoidmain(String[]args){LinkedHashSet<String>set=newLinkedHashSet<>();set.add("A");set.add(
因此,当需要在多线程环境下进行读操作较多的场景时,可以使用CopyOnWriteArraySet。 import java.util.concurrent.CopyOnWriteArraySet; public class CopyOnWriteArraySetExample { public static void main(String[] args) { CopyOnWriteArraySet<String> set = new CopyOnWriteArraySet<>(); // 添加元素 set.add("apple"); ...
AI代码解释 importjava.util.LinkedHashSet;publicclassLinkedHashSetExample{publicstaticvoidmain(String[]args){String str="hello,world!";LinkedHashSet<Character>set=newLinkedHashSet<>();for(char ch:str.toCharArray()){set.add(ch);}StringBuilder sb=newStringBuilder();for(char ch:set){sb.append(ch...
代码语言:java AI代码解释 // 创建一个LinkedHashSetLinkedHashSet<String>set=newLinkedHashSet<>();// 添加元素set.add("apple");set.add("banana");set.add("orange");// 创建迭代器Iterator<String>iterator=set.iterator();// 遍历元素while(iterator.hasNext()){Stringelement=iterator.next();System....
5.1. LinkedHashSet add, remove, iterator example //1. Create LinkedHashSet LinkedHashSet<String> LinkedHashSet =newLinkedHashSet<>(); //2. Add elements to LinkedHashSet LinkedHashSet.add("A"); LinkedHashSet.add("B"); LinkedHashSet.add("C"); ...
import java.util.TreeSet;publicclassTestTreeSet {publicstaticvoidmain(String[] args) { TreeSet<Dog> dset =newTreeSet<Dog>(); dset.add(newDog(2)); dset.add(newDog(1)); dset.add(newDog(3)); Iterator<Dog> iterator =dset.iterator();while(iterator.hasNext()) { ...
importjava.util.LinkedHashSet;publicclassLinkHashSetExample {publicstaticvoidmain(String[] args) { LinkedHashSet linkedHashSet=newLinkedHashSet(); linkedHashSet.add("d"); linkedHashSet.add("a"); linkedHashSet.add("c"); linkedHashSet.add(3); ...
ReverseIteratorWithKey Enumerable EnumerableWithIndex EnumerableWithKey Serialization JSONSerializer JSONDeserializer Sort Container Appendix Containers All data structures implement the container interface with the following methods: type Container interface { Empty() bool Size() int Clear() Values() []in...
ReverseIteratorWithKey Enumerable EnumerableWithIndex EnumerableWithKey Serialization JSONSerializer JSONDeserializer Sort Container Appendix Containers All data structures implement the container interface with the following methods: type Container interface { Empty() bool Size() int Clear() Values() []in...
public Iterator<E> iterator() { return map.keySet().iterator(); } iterator()方法返回对此 set 中元素进行迭代的迭代器。返回元素的顺序并不是特定的。 底层调用HashMap的keySet返回所有的key,这点反应了HashSet中的所有元素都是保存在HashMap的key中,value则是使用的PRESENT对象,该对象为static final。 publ...