addAll : Add Collection of Data to List from specific index

boolean addAll(int index, Collection<? extends E> c)

   Inserts all of the elements in the specified collection into this list at the specified position. Shifts the element currently at that position and any subsequent elements to the right.

import java.util.*;
class ListAddAllFromIndex{
 public static void main(String args[]){
  List<Integer> myList = new ArrayList<> ();
  Set<Integer> mySet =new HashSet<> ();
  
  /* Add Elements to myList */
  for(int i=0; i < 10; i++){
   myList.add(i);
  }
  
  /* Add Elements to mySet */
  for(int i=5; i < 15; i++){
   mySet.add(i);
  }
  
  System.out.println("Elements in myList are ");
  System.out.println(myList +"\n");
  System.out.println("Elements in mySet are ");
  System.out.println(mySet +"\n");
  
  /* Add mySet Date to myList */
  myList.addAll(1, mySet);
  
  System.out.println("Elements in myList after adding mySet are");
  System.out.println(myList); 
 }
}

Output

Elements in myList are
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]

Elements in mySet are
[5, 6, 7, 8, 9, 10, 11, 12, 13, 14]

Elements in myList after adding mySet are
[0, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 1, 2, 3, 4, 5, 6, 7, 8, 9]

1. throws UnsupportedOperationException if the <tt>addAll</tt> operation is not supported by this list.

import java.util.*;
class ListAddAllFromUnsupported{
 public static void main(String args[]){
  List<Integer> myList = new ArrayList<> ();
  List<Integer> unModifiable;
  Set<Integer> mySet =new HashSet<> ();
  
  /* Add Elements to myList */
  for(int i=0; i < 10; i++){
   myList.add(i);
  }
  
  unModifiable = Collections.unmodifiableList(myList);
  
  /* Add Elements to mySet */
  for(int i=5; i < 15; i++){
   mySet.add(i);
  }
  
  System.out.println("Elements in unModifiable List are ");
  System.out.println(unModifiable +"\n");
  System.out.println("Elements in mySet are ");
  System.out.println(mySet +"\n");
  
  /* Add mySet Data to unModifiable List */
  unModifiable.addAll(1, mySet);
  
  System.out.println("Elements in myList after adding mySet are");
  System.out.println(myList); 
 }
}

Output

Elements in unModifiable List are
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]

Elements in mySet are
[5, 6, 7, 8, 9, 10, 11, 12, 13, 14]

Exception in thread "main" java.lang.UnsupportedOperationException
        at java.util.Collections$UnmodifiableList.addAll(Unknown Source)
        at ListAddAllFromUnsupported.main(ListAddAllFromUnsupported.java:26)

2. throws ClassCastException if the class of an element of the specified collection prevents it from being added to this list

3. throws NullPointerException if the specified collection contains one

or more null elements and this list does not permit null elements, or if the specified collection is null

4. throws IllegalArgumentException if some property of an element of the specified collection prevents it from being added to this list

5. throws IndexOutOfBoundsException if the index is out of range

import java.util.*;
class ListAddAllIndexBound{
 public static void main(String args[]){
  List<Integer> myList = new ArrayList<> ();
  Set<Integer> mySet =new HashSet<> ();
  
  /* Add Elements to myList */
  for(int i=0; i < 10; i++){
   myList.add(i);
  }
  
  /* Add Elements to mySet */
  for(int i=5; i < 15; i++){
   mySet.add(i);
  }
  
  System.out.println("Elements in myList List are ");
  System.out.println(myList +"\n");
  System.out.println("Elements in mySet are ");
  System.out.println(mySet +"\n");
  
  /* Add mySet Data to myList List */
  myList.addAll(15, mySet);
  
  System.out.println("Elements in myList after adding mySet are");
  System.out.println(myList); 
 }
}

Output

Elements in myList List are
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]

Elements in mySet are
[5, 6, 7, 8, 9, 10, 11, 12, 13, 14]

Exception in thread "main" java.lang.IndexOutOfBoundsException: Index: 15, Size:10
        at java.util.ArrayList.rangeCheckForAdd(Unknown Source)
        at java.util.ArrayList.addAll(Unknown Source)
        at ListAddAllIndexBound.main(ListAddAllIndexBound.java:23)

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