See how to use the rotate method in Collections to rotate the elements to a specified position.
import java.util.*;public class UsingRotateInCollections { public static void main(String args[]) { UsingRotateInCollections usingRotateInCollections = new UsingRotateInCollections(); usingRotateInCollections.proceed(); } private void proceed() { //Creating a list with default values List defaultList = new ArrayList(); defaultList.add(1); defaultList.add(2); defaultList.add(3); defaultList.add(4); defaultList.add(5); defaultList.add(6); defaultList.add(7); defaultList.add(8); System.out.println("List as added: " + Arrays.toString(defaultList.toArray())); Collections.rotate(defaultList, 2); //Rotating the list elements by 2 positions System.out.println("List after rotate with 2 positions: "+Arrays.toString(defaultList.toArray())); }}/*Expected output:
[root@mypc]# java UsingRotateInCollectionsList as added: [1, 2, 3, 4, 5, 6, 7, 8]List after rotate with 2 positions: [7, 8, 1, 2, 3, 4, 5, 6]*/ 
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