(final int index) { rangeCheckForAdd(index); return new ListItr(index); } /** * 返回一个范围为 [fromIndex, toIndex) 的子列表, * 如果参数越界,那么抛出一个 IndexOutOfBoundsException 异常 */ public List<E> subList(int fromIndex, int toIndex) { return (this instanceof RandomAccess ?
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*@paramindex index of the element to return *@returnthe element at the specified position in this list *@throwsIndexOutOfBoundsException {@inheritDoc}*/publicE get(intindex) { checkElementIndex(index);//检查index范围是否在size之内returnnode(index).item;//调用node(index)去找到index对应的node然...
An ordered collection(also known as a sequence ).The user of this interface has precise control over where in the list each element is inserted.The user can access elements by their integer index(position in the list), and search for elements in the list. Unlike sets, lists typically allow...
publicstaticvoidtestAddAllByIndex(){ ArrayList<String> arrayList =newArrayList<>(); arrayList.add("张三"); arrayList.add("李四"); arrayList.add("王二"); ArrayList<String> arrayList2 =newArrayList<>(); arrayList2.add("麻子"); arrayList2.add("铁子"); ...
相当于是add(int index,E)与addAll(Collection<? extends E> c)结合版 在指定的索引下标,依次追加指定集合中的所有元素.例如上一个例子,我想在张三后面就把麻子与铁子都插队进去,那么如下来实现一下. public static void testAddAllByIndex(){ ArrayList<String> arrayList = new ArrayList<>(); ...
現在定義されている唯一の名前はsuppressAccessChecksです。これは、リフレクトされたオブジェクトが使用される位置で実行される、Javaプログラミング言語の標準のアクセス・チェック(public、default (package)アクセス、protected、privateメンバーに対するチェック)を無効にします。 java.io....
public static void readPrivate() throws NoSuchFieldException, IllegalAccessException { Field f =...
OpenJDK Early Access Builds JRE for Consumers Java 24, Java 21, and earlier versions available now Learn about Java SE Subscription JDK 24 is the latest release of the Java SE Platform. JDK 21 is the latestLong-Term Support (LTS)release of the Java SE Platform. ...
1.2、直接使用list.remove(Object o) ArrayList.remove(Object o)源码的逻辑和ArrayList.remove(int index)大致相同:列表索引坐标从小到大循环遍历,若列表中存在与入参对象相等的元素,则把该元素移除,后面的元素都往左移动一位,返回true,若不存在与入参相等的元素,返回false。