After Arraylist.add() In A Loop, All Elements Are Identical. Why? February 27, 2024 Post a Comment If I do this [quasi-java-code]: while (loop) { localObject = getDataForObject(); globalPublicStaticArrayList.add(localObject); } All the elements in globalPuSolution 1: Java uses call by value, but here those values are references to objects.What you are adding to the list is not a copy of the object, but a copy of the reference. Your method returned the same object each time you called it. It probably should return a new object each time, then you wouldn't need this workaround. Solution 2: globalPublicStaticArrayList<Object>.add(localObject); Copyhere you are passing the localObject reference. You you want a copy of every objects you should create a new object at every iterationBaca JugaCan A Mobile App Which Supports An Mdm Work On Devices Which Do Not Run On MdmsNoclassdeffounderror On Calligraphy LibraryProtect Android Application From PiracySolution 3: In getDataForObject() may be you are not creating "new" object of return type. Because of that all objects are pointing to same address. Share You may like these postsArrayadapter, Listview, Creating And Updating ContentsAdding Object To ArraylistPassing Arraylist To Php Using Android Asynchronous Http Client IssueUpdate And Remove Gridview Items At Runtime Post a Comment for "After Arraylist.add() In A Loop, All Elements Are Identical. Why?"