As we have seen the implementations of a List are :
Let us see the ArrayList implementation
Reversal of a List can be done using Collections.reverse() method. It is independent of the alphabets. And is not a sort. It is just a reversal.
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
public class MyApplication {
public static void main(String[] args) {
List x = new ArrayList<>();
x.add("Mohan");
x.add("Kriti");
x.add("Salim");
Collections.reverse(x);
for (String data : x) {
System.out.println(data);
}
}
}
So, in the above code we have created a List,
Listx = new ArrayList<>();
And initialised three names to the variable x,
x.add("Mohan");
x.add("Kriti");
x.add("Salim");Below is how the values are positioned in the List,
Then we have used the Collections.reverse(x) Method to reverse the elements of the List x.
Collections.reverse(x);
And the List x gets sorted in reverse order with Salim as the first value, Mohan second and Kriti as the third.
And we get the below output.