set.add("Geeks");// Displaying the LinkedHashSetSystem.out.println("The LinkedHashSet:"+ set);try{// Creating the arrayString[] arr =null;// usingtoArray()// Since arr is null// Hence exception will be thrownarr = set.toArray(arr);// Displaying arrSystem.out.println("The arr[] ...
Java LinkedHashSet的 toArray() 方法是用来形成一个与LinkedHashSet相同元素的数组。基本上,它将LinkedHashSet中的所有元素复制到一个新的数组中。语法Object[] arr = LinkedHashSet.toArray() Java Copy参数: 该方法不接受任何参数。返回值: 该方法返回一个包含类似于LinkedHashSet元素的数组。下面的程序说明了...
程序1:数组的大小与LinkedHashSet相同 // Java代码示例来说明toArray(arr[])importjava.util.*;publicclassLinkedHashSetDemo{publicstaticvoidmain(Stringargs[]){// 创建一个空的LinkedHashSetLinkedHashSet<String>set=newLinkedHashSet<String>();// 使用add()方法添加元素set.add("Welcome");set.ad...
// Main class // LinkedHashSetExample publicclassGFG{ // Main driver method publicstaticvoidmain(String[]args) { // Creating an empty LinkedHashSet of string type LinkedHashSet<String>linkedset =newLinkedHashSet<String>(); // Adding element to LinkedHashSet // using add() method linkedse...
5.2. Convert LinkedHashSet to Array Example Java example to convert a LinkedHashSet to array usingtoArrray()method. LinkedHashSet<String> LinkedHashSet =newLinkedHashSet<>(); LinkedHashSet.add("A"); LinkedHashSet.add("B"); LinkedHashSet.add("C"); ...
public class LinkedHashSetExample { public static void main(String[] args) { LinkedHashSet<String> set = new LinkedHashSet<>(); // 添加元素 set.add("apple"); set.add("banana"); set.add("cherry"); // 遍历元素 for (String element : set) { ...
publicclassSetExample{ publicstaticvoidmain(String[] args){ // 声明集合 1 Set<Integer> a =newHashSet<Integer>(); // 添加元素 a.addAll(Arrays.asList( newInteger[]{1,3,2,4,8,9,0})); // 声明集合 2 Set<Integer> b =new...
Example Here, we use toArray() method to find the first element from LinkedhashSet. Open Compiler import java.util.LinkedHashSet; public class Main { public static void main(String[] args) { LinkedHashSet<String> hm = new LinkedHashSet<>(); hm.add("apple"); hm.add("banana"); hm...
In this example, we are using stream API to collect ArrayList elements into LinkedHashSet to get unique elements. See the example below.import java.util.ArrayList; import java.util.LinkedHashSet; import java.util.stream.Collectors; public class Main { public static void main(String[] args){ ...
Some points about LinkedHashSet LinkedHashSet implements Set interface and extends HashSet class. LinkedHashSet maintains insertion order, so when you will be able to access elements in the order they were inserted like ArrayList. Example: