Answer:
a. ArrayList values = new ArrayList();
Correct way: ArrayList<Type> values = new ArrayList<>();
b. ArrayList values = new ArrayList();
Correct way: ArrayList<Type> values = new ArrayList<>();
c. ArrayList values = new ArrayList;
Correct way: ArrayList<Type> values = new ArrayList<>();
d. ArrayList values = new ArrayList();
for (int i = 1; i <= 10; i++) {
values.set(i - 1, i * i);
}
Correct way:
ArrayList<Integer> values = new ArrayList<>();
for (int i = 1; i <= 10; i++) {
*At this point size of the array is 0*
values.set(i - 1, i * i);
* "set()" method is used to set an element in an ArrayList object at the specified index and in this line is wrong bcz u have no objects added in your ArrayList. *
}
e. ArrayList values; --> You have to initialize the ArrayList
for (int i = 1; i <= 10; i++) {
values.add(i * i); }
Correct way:
ArrayList<Integer> values = new ArrayList<>();
for (int i = 1; i <= 10; i++) {
values.add(i * i); }