Java ArrayList how to add elements at the beginning
I need to add elements to an ArrayList queue whatever, but when I call the function to add an element, I want it … Read more
I need to add elements to an ArrayList queue whatever, but when I call the function to add an element, I want it … Read more
How can I split an ArrayList (size=1000) in multiple ArrayLists of the same size (=10) ? ArrayList<Integer> results; 21 Answers 21
I need help with this java please. I created an ArrayList of bulbs, and I’m trying to replace a bulb at specific index … Read more
I was reading Java’s ArrayList source code and noticed some comparisons in if-statements. In Java 7, the method grow(int) uses if (newCapacity – … Read more
I have an ArrayList l1 of size 10. I assign l1 to new list reference type l2. Will l1 and l2 point to … Read more
I have two arraylist filelist and imgList which related to each other, e.g. “H1.txt” related to “e1.jpg”. How to automatically randomized the list … Read more
I have an ArrayList that I want to iterate over. While iterating over it I have to remove elements at the same time. … Read more
This question already has answers here: Create ArrayList from array (40 answers) Initialization of an ArrayList in one line (33 answers) Closed 5 … Read more
I try to add objects to a List<String> instance but it throws an UnsupportedOperationException. Does anyone know why? My Java code: String[] membersArray … Read more
Assuming that arraylist is defined as ArrayList<String> arraylist, is arraylist.removeAll(arraylist) equivalent to arraylist.clear()? If so, can I assume that the clear() method is … Read more