4.4、add(int index, E element) /** * Inserts the specified element at the specified position in this * list. Shifts the element currently at that position (if any) and * any subsequent elements to the right (adds one to their indices). * @param index index at which the specified elem...
// Java code to illustrateadd(int index, E elements)importjava.io.*;importjava.util.*;publicclassArrayListDemo{publicstaticvoidmain(String[] args){// create an empty list with an initial capacityList<Integer> list =newArrayList<Integer>(5);// useadd() method to initially//addelements in t...
public static void listDemo(List list){ //1,添加元素。 list.add("abc3"); list.add("abc9"); list.add("abc1"); list.add("abc4"); //2,指定位置增加元素。 // list.add(2,"abc2"); //3,删除指定角标元素。 // list.remove(4); //4,修改指定位置的元素。 // list.set(2,"abc7...
testers.add(ListRemoveAllTester.class); testers.add(ListRemoveAtIndexTester.class); testers.add(ListRemoveTester.class); testers.add(ListReplaceAllTester.class); testers.add(ListRetainAllTester.class); testers.add(ListSetTester.class); testers.add(ListSubListTester.class); testers.add(ListToA...
[apple]arraylist.add("banana");// [apple, banana]//Adding a new element at index position 1arraylist.add(1,"grapes");// [apple, grapes, banana]//Adding multiple elements element at index position 0arraylist.add(0,Arrays.asList("date","guava"));// [date, guava, apple, grapes, ...
Inserts the specified element at the specified position in this list (optional operation).Add(Object) Appends the specified element to the end of this list (optional operation). C# 複製 [Android.Runtime.Register("add", "(Ljava/lang/Object;)Z", "GetAdd_Ljava_lang_Object_Handler:Java.Util...
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AddAll(Int32, ICollection) Inserts all of the elements in the specified collection into this list at the specified position (optional operation). AddAll(ICollection) Appends all of the elements in the specified collection to the end of this list, in the order that they are returned by the ...