@Test(expected = UnsupportedOperationException.class)publicvoidgivenUsingGuavaBuilder_whenUnmodifiableListIsCreated_thenNoLongerModifiable(){ List<String> list =newArrayList<>(Arrays.asList("one","two","three")); ImmutableList<String> unmodifiableList = ImmutableList.<String>builder().addAll(list).build...
import java.io.ByteArrayOutputStream; import java.util.ArrayList; public class ArrayListToStringBytes { public static void main(String[] args) { ArrayList<String> stringList = new ArrayList<>(); stringList.add("Hello"); stringList.add("World"); byte[] result = convertArrayListToBytes(string...
此时 ArrayList的长度等于 传入的集合的长度publicArrayList(Collection<? extends E> c){// 将参数集合转为数组elementData = c.toArray();// 判断数组大小if((size = elementData.length) !=0) {// c.toArray might (incorrectly) not return Object[] (see 6260652)if(elementData.getClass() != ...
For example, List.of() is a method that creates an immutable List with specified items. It is often used to create and initialize a List in one line. We can use it with ArrayList constructor to create an ArrayList and populate it with items in a single line. ArrayList<String> arrayList...
(this, 0, -1, 0); } /** Index-based split-by-two, lazily initialized Spliterator */ static final class ArrayListSpliterator<E> implements Spliterator<E> { /* * If ArrayLists were immutable, or structurally immutable (no * adds, removes, etc), we could implement their spliterators * ...
Go datastructures. tree immutable avl-tree linked-list trie priority-queue data-structures error-handling exceptions hashtable btree avl hash-tables arraylist linear-hash-table ternary-search-trie Updated Oct 7, 2022 Go maxalmonte14 / phpcollections Star 57 Code Issues Pull requests A set of ...
static final class ArrayListSpliterator<E> implements Spliterator<E> { /* * If ArrayLists were immutable, or structurally immutable (no * adds, removes, etc), we could implement their spliterators * with Arrays.spliterator. Instead we detect as much ...
* Since the chromosome (and thus its arrayRepresentation) is immutable, the * array representation is sorted only once in the constructor. * * For details, see: * * Bean, J.C.: Genetic algorithms and random keys for sequencing and * optimization. ...
asList(1, 2, 3, 4, 5); // Java 9 `List.of()` method (immutable) List<Integer> list5 = List.of(1, 2, 3, 4, 5); ArrayList Methods The ArrayList class also inherits methods from parent classes List, Collection, and Iterable. The most popular methods are set(), get(), size...
通过Collections.addAll(arrayList, strArray)方式转换,根据数组的长度创建一个长度相同的List,然后通过Collections.addAll()方法,将数组中的元素转为二进制,然后添加到List中,这是最高效的方法。 关键代码:ArrayList< String> arrayList = new ArrayList<String>(strArray.length); Collections.addAll(arrayList, strAr...