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 JugaHow To Get The Arraylist Out Android StudioHow To Properly Add Data To Arraylist - AndroidAndroid Jsonarray To ArraylistSolution 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 postsHow To Get Sqlite Db Values In Arraylist To ListviewSort Android Apps Alphabetically?Java.util.concurrentmodificationexception Android After Remove Elements From Array ListAndroid Timezone.getavailableids() Producing Strange Strings Post a Comment for "After Arraylist.add() In A Loop, All Elements Are Identical. Why?"