ArrayList Methods

What will be the output of the following code snippet? ArrayList<Integer> list = new ArrayList<>(); list.add(5); System.out.println(list.get(0));

Consider the following code: ArrayList<String> list = new ArrayList<>(); list.add("Apple"); list.add(0, "Banana"); System.out.println(list); What will be printed to the console?

What will be the output after executing the following code? ArrayList<String> list = new ArrayList<>(); list.add("Apple"); list.clear(); System.out.println(list);

Which method is used to determine if an ArrayList contains a specific element, such as "Banana"?

What output will the following code produce? ArrayList<String> list = new ArrayList<>(); System.out.println(list.isEmpty());

Which method is used to convert an ArrayList into a standard Java array?

Which of the following code snippets will result in a NullPointerException? ArrayList<String> list = null; System.out.println( /* Insert code here */ );

What is the output of the following code? ArrayList<String> list = new ArrayList<>(); list.add("Apple"); list.add("Banana"); list.add("Apple"); System.out.println(list.lastIndexOf("Apple"));

What will be the size of the ArrayList after executing the following code? ArrayList<String> list = new ArrayList<>(); list.add(null); System.out.println(list.size());

What will be the output of the following code? ArrayList<String> list = new ArrayList<>(); list.add("A"); list.add("B"); ArrayList<String> clonedList = (ArrayList<String>) list.clone(); clonedList.add("C"); System.out.println(list.size() + " " + clonedList.size());

What will be the output of the following code? ArrayList<Integer> list = new ArrayList<>(); list.add(10); list.add(20); list.removeIf(n -> n % 2 == 0); System.out.println(list);

What will the following code print? ArrayList<Integer> list = new ArrayList<>(); list.add(1); list.add(2); list.trimToSize(); System.out.println(list.size());

What will happen when attempting to sort an ArrayList containing both Strings and Integers?

What will be the eventual result of the following code execution? ArrayList<String> list = new ArrayList<>(); list.add("A"); list.add("B"); for (int i = 0; i < list.size(); i++) { list.add("C"); } System.out.println(list);

What is the result of the of the following statements? ArrayList<String> list = new ArrayList<>(); list.add("Apple"); list.add("Banana"); list.add("Cherry"); List<String> subList = list.subList(0, 2); subList.add("Mango"); System.out.println(list);

What will be the output of the following code? ArrayList<Integer> list = new ArrayList<>(); list.add(10); list.add(20); Integer num = 10; list.remove(num); System.out.println(list);

What values are printed with this loop construct? ArrayList<Integer> list = new ArrayList<>(); list.add(1); list.add(2); list.add(3); for (int i = 0; i < list.size(); i++) { for (int j = 0; j < i; j++) { System.out.print(list.get(j)); } }

What is output after executing the following code block? ArrayList<String> list = new ArrayList<>(); list.add("A"); list.add("B"); list.add("C"); for (String s : list) { if (s.equals("B")) { System.out.println(s); } }

Consider the code below. What will be the eventual outcome of the 'for' loop? ArrayList<Integer> list = new ArrayList<>(); list.add(1); list.add(2); list.add(3); for (int i = 0; i < list.size(); i++) { list.add(4); }

What is printed to the console after running the code? ArrayList<Integer> list = new ArrayList<>(); list.add(1); list.add(2); list.add(3); for (int i = list.size() - 1; i >= 0; i--) { list.remove(i); } System.out.println(list);

What will the following nested loop produce? int[] arr = {1, 2, 3}; for (int i = 0; i < arr.length; i++) { for (int j = 0; j < i; j++) { System.out.print(arr[j] + " "); } }

What is the output of the following code? int[] arr = {1, 2, 3}; int i = 0; while (i <= arr.length) { System.out.println(arr[i]); i++; }

What happens in this loop with Arrays.asList? List<String> list = Arrays.asList("A", "B", "C"); for (int i = 0; i < list.size(); i++) { list.set(i, list.get(i).toLowerCase()); } System.out.println(list);

What happens when accessing a modified list during a loop? ArrayList<Integer> list = new ArrayList<>(Arrays.asList(1, 2, 3, 4)); for (int i = 0; i < list.size(); i++) { if (list.get(i) == 2) { list.add(5); } } System.out.print(list.get(i) + " ");

What happens when you execute the following code? ArrayList<String> list = new ArrayList<>(); list.add("A"); list.add("B"); list.add("C"); for (int i = 0; i < list.size(); i++) { if (list.get(i).equals("B")) { list.set(i, "Z"); } } System.out.println(list);

What does the following code output? ArrayList<String> list = new ArrayList<>(Arrays.asList("A", "B", "A", "C")); System.out.println(Collections.frequency(list, "A"));