}/*** Checks if the given index is in range. If not, throws an appropriate * runtime exception. This method does *not* check if the index is * negative: It is always used immediately prior to an array access, * which throws an ArrayIndexOutOfBoundsException if index is negative.*/p...
modCount++;// overflow-conscious codeif(minCapacity - elementData.length >0)// 扩容grow(minCapacity); }/** 扩容的核心方法 */privatevoidgrow(intminCapacity){// overflow-conscious codeintoldCapacity=elementData.length;// 新容量为旧容量的1.5倍// newCapacity = oldCapacity + oldCapacity / 2 = ...
This method does *not* check if the index is * negative: It is always used immediately prior to an array access, * which throws an ArrayIndexOutOfBoundsException if index is negative. */ private void rangeCheck(int index) { if (index >= size) throw new IndexOutOfBoundsException(out...
Java SE 17 & JDK 17 Overview Module Package Class Use Tree Preview New Deprecated Index Help Summary: Nested | Field | Constr | Method Detail: Field | Constr | Method SEARCH: Module java.base Package java.util Class ArrayList<E>java...
import java.util.ArrayList; import java.util.List; /** * A Java program to explain the retainAll() method of the ArrayList class. * * @author coderolls.com * */ public class ArrayListRetainAllExample { public static void main(String[] args) { //create an empty ArrayList of Integer to...
at org.itstack.interview.test.ApiTest.main(ApiTest.java:13) Process finished with exit code 1 🤭谢飞机是懵了,咱们一点点分析ArrayList 三、数据结构 Array + List = 数组 + 列表 = ArrayList = 数组列表 ArrayList的数据结构是基于数组实现的,只不过这个数组不像我们普通定义的数组,它可以在ArrayList的...
Run Code Output ArrayList: [JavaScript, Java, Python, C] SubList: [Java, Python] In the above example, we have used thesubList()method to get elements from index 1 to 3 (excluding 3). Note: If you want to know how to get the index of the specified element, visitJava ArrayList index...
(a specialized variant appears in method forEach) ArrayList<E> lst; if ((hi = fence) < 0) { if ((lst = list) == null) hi = fence = 0; else { expectedModCount = lst.modCount; hi = fence = lst.size; } } return hi; } public ArrayListSpliterator<E> trySplit() { int hi ...
int hi; // (a specialized variant appears in method forEach) ArrayList<E> lst; if ((hi = fence) < 0) { if ((lst = list) == null) hi = fence = 0; else { expectedModCount = lst.modCount; hi = fence = lst.size;
java 集合深度复制 java arraylist深拷贝 最近在刷Leetcode,里面经常用到ArrayList,对于ArrayList的拷贝也是弄得不是很明白。 ArrayList的拷贝方法有很多,其中大部分都是浅拷贝,例如通过构造函数方法拷贝, 1 List<Integer> l2 = new ArrayList<>(l1); 1.