1.4. IndexOutOfBoundsException 无效的索引参数将导致IndexOutOfBoundsException错误。 Exception in thread "main" java.lang.IndexOutOfBoundsException: Index: 4, Size: 4 at java.util.ArrayList.rangeCheck(ArrayList.java:653) at java.util.ArrayList.get(ArrayList.java:429) at com.howtodoinjava.example....
String element = arrayList.get(1); System.out.println("Element at index 1: " + element); } } ``` 在上述示例中,我们创建了一个`ArrayList`对象,并添加了三个元素。然后,使用`get(1)`方法获取索引为1的元素,即第二个元素。最后,将该元素打印输出。 注意:索引从0开始,所以`get(1)`返回的是第二...
Learn to get the element from an ArrayList. We will be using ArrayList get() method to get the object at the specified index.
ArrayList mySubAL = myAL.GetRange( 0, 5 ); Console.WriteLine( "Index 0 through 4 contains:" ); PrintValues( mySubAL, '\t' ); // Replaces the values of five elements starting at index 1 with the values in the ICollection. myAL.SetRange( 1, mySourceList ); // Displays the ...
public E get(int index) { checkElementIndex(index); return node(index).item; } /** * Returns the (non-null) Node at the specified element index. */ Node<E> node(int index) { // assert isElementIndex(index); if (index < (size >> 1)) { ...
是否支持快速随机访问:LinkedList不支持高效的随机元素访问,而ArrayList支持。快速随机访问就是通过元素的序号快速获取元素对象(对应于get(int index)方法)。 内存空间占用:ArrayList的空 间浪费主要体现在在 list 列表的结尾会预留一定的容量空间,而LinkedList的空间花费则体现在它的每一个元素都需要消耗比ArrayList更多的...
Returns the element at the specified position in this list. C# 複製 [Android.Runtime.Register("get", "(I)Ljava/lang/Object;", "GetGet_IHandler")] public override Java.Lang.Object? Get (int index); Parameters index Int32 index of the element to return Returns Object the element at...
numbers.get(j); if (currentNum == nextNum) { matchingIndexes.add(j); } } } if (matchingIndexes.isEmpty()) { System.out.println("没有找到相同的数字。"); } else { System.out.println("找到相同的数字的索引位置:"); for (int index : matchingIndexes) { System.out.pr...
10.get(int index) 11.set(int index, E element) 12.remvoe(int index) 13.fastRemove(int index) 14.remove(Object o) 15.removeRange(int fromIndex, int toIndex) 16.outOfBoundsMsg(int index) 17.clear() 18.removeAll(Collection c)、retainAll(Collection c) ...
public int lastIndexOf(Objecto) Returns the index of the last occurrence of the specified element in this list, or -1 if this list does not contain the element. More formally, returns the highest indexisuch that(o==null ? get(i)==null : o.equals(get(i))), or -1 if there is ...