下面是使用手动拷贝元素方法实现ArrayList深拷贝的示例代码: importjava.util.ArrayList;publicclassDeepCopyExample{publicstaticvoidmain(String[]args){// 创建一个原始ArrayList对象ArrayList<String>originalList=newArrayList<>();originalList.add("Java");originalList.add("Python");originalList.add("C++");// ...
public static <T> List<T> deepCopy(List<T> src) throws IOException, ClassNotFoundException { ByteArrayOutputStream byteOut = new ByteArrayOutputStream(); ObjectOutputStream out = new ObjectOutputStream(byteOut); out.writeObject(src); ByteArrayInputStream byteIn = new ByteArrayInputStream(byteO...
这段代码来自其他文章 1publicstatic<T> List<T> deepCopy(List<T> src)throwsIOException, ClassNotFoundException {2ByteArrayOutputStream byteOut =newByteArrayOutputStream();3ObjectOutputStream out =newObjectOutputStream(byteOut);4out.writeObject(src);56ByteArrayInputStream byteIn =newByteArrayInputStre...
这段代码来自其他文章 1publicstatic<T> List<T> deepCopy(List<T> src)throwsIOException, ClassNotFoundException {2ByteArrayOutputStream byteOut =newByteArrayOutputStream();3ObjectOutputStream out =newObjectOutputStream(byteOut);4out.writeObject(src);56ByteArrayInputStream byteIn =newByteArrayInputStre...
v.elementData = Arrays.copyOf(elementData, size); v.modCount = 0; return v; } catch (CloneNotSupportedException e) { // this shouldn't happen, since we are Cloneable throw new InternalError(e); } } 以下Java 程序使用clone()方法创建一个 ArrayList 的浅拷贝。
(vmSymbols::java_lang_ArrayIndexOutOfBoundsException());}// Check zero copyif(length==0)return;// This is an attempt to make the copy_array fast.int l2es=log2_element_size();int ihs=array_header_in_bytes()/wordSize;char*src=(char*)((oop*)s+ihs)+((size_t)src_pos<<l2es);...
import java.util.ArrayList; public class RunoobTest { public static void main(String[] args) { ArrayList<String> sites = new ArrayList<String>(); sites.add("Google"); sites.add("Runoob"); sites.add("Taobao"); sites.add("Weibo"); sites.set(2, "Wiki"); // 第一个参数为索引位置,第...
3.2. Deep Copying a Java Collections Creating a deep copy of a collection is rather easy. We need to create a new instance of collection and copy all elements from the given collection into the cloned collection – one by one. Note that we will copy the element’s clone in the cloned ...
public List deepcopy(List src) throws IOException, ClassNotFoundException { ByteArrayOutputStream byteout = new ByteArrayOutputStream(); ObjectOutputStream out = new ObjectOutputStream(byteout); out.writeObject(src); ByteArrayInputStream bytein = new ByteArrayInputStream( ...
CopyOnWriteArrayList 的其他构造函数: 1.CopyOnWriteArrayList(Collection<? extends E> c):创建一个包含指定集合元素的列表,按照集合迭代器返回的顺序。 2.CopyOnWriteArrayList(E[] toCopyIn):创建一个包含给定数组副本的列表。 向量同步时为什么要使用arrayList?