1、通过下面的代码可以看出LinkedHashSet是HashSet的子类,其底层是通过LinkedHashMap来实现数据的存储和排序的 。 publicclassLinkedHashSet<E>extendsHashSet<E>implementsSet<E>, Cloneable, java.io.Serializable {privatestaticfinallongserialVersionUID = -2851667679971038690L;//调用父类的构造函数,通过HashSet的构...
Therefore, it would be wrong to write a program that depended on this exception for its correctness: the fail-fast behavior of iterators should be used only to detect bugs. This class is a member of the Java Collections Framework. Since: 1.4 See Also: Object.hashCode(), Collection, Set...
impossible to make any hard guarantees in the presence of unsynchronized concurrent modification. Fail-fast iterators throwConcurrentModificationExceptionon a best-effort basis. Therefore, it would be wrong to write a program that depended on this exception for its correctness:the fail-fast behavior of...
We can user Iterator object to iterate through our collection. While iterating we can add or remove objects from the collection. Below program demonstrates the use of iterator in LinkedHashSet collection. Java Code: package linkedHashSet; import java.util.Iterator; import java.util.LinkedHashSet;...
// Java程序示例 // clear()方法 // 用于字符串值 import java.util.*; public class GFG1 { public static void main(String[] argv) throws Exception { try { // 创建LinkedHashSet<Integer>对象 LinkedHashSet<String> linkset = new LinkedHashSet<String>(); // 填充哈希集 linkset.add("A");...
Fail-fast iterators throw ConcurrentModificationException on a best-effort basis. Therefore, it would be wrong to write a program that depended on this exception for its correctness: the fail-fast behavior of iterators should be used only to detect bugs....
hashSet, elements you insert are stored as keys of HashMap object. Where as in LinkedHashSet, elements you insert are stored as keys of LinkedHashMap object. The values of these keys will be the same constant i.e “PRESENT“. We have seen this inHow HashSet works internally in Java....
Program Output. [A, B, C, D, E] 5.3. Convert LinkedHashSet to ArrayList Example Java example to convert a LinkedHashSet to arraylist using Java 8 stream API. LinkedHashSet<String> LinkedHashSet = new LinkedHashSet<>(); LinkedHashSet.add("A"); LinkedHashSet.add("B"); LinkedHashSet...
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Java Copy输出:LinkedHashSet before retainAll() operation : [1, 2, 3, 4, 5] Collection Elements to be retained : [1, 2, 3] LinkedHashSet after retainAll() operation : [1, 2, 3] Java Copy例2: 对于NullPointerException// Java program to demonstrate // retainAll() method for Integer...