As normal how we declare a string array when we dont know the size i.e how much data should be inserted then i give as String str = null. After that i can perform all the operations. When i try to do the same with int that is int arr = null. I dont get compilation error, when i try to access its elements i am getting the java.nullpointer exception.
Any help would be greatly appreciated.
I'm not sure I understand. If you set something to null, then try to access it, of course you will get a null pointer exception. In your first example, with the String array, the same thing would happen.
Look at the code below. I am using this to solve given input separated by ",". I think i have used some extra code. i.e i guess there is some other short way to do this. If any one know please share with me.