Replace an element at specified index of Java ArrayList Example
- /*
- Replace an element at specified index of Java ArrayList Example
- This Java Example shows how to replace an element at specified index of java
- ArrayList object using set method.
- */
- import java.util.ArrayList;
- public class ReplaceElementAtSpecifiedIndexArrayListExample {
- public static void main(String[] args) {
- //create an ArrayList object
- ArrayList arrayList = new ArrayList();
- //Add elements to Arraylist
- arrayList.add("1");
- arrayList.add("2");
- arrayList.add("3");
- /*
- To replace an element at the specified index of ArrayList use
- Object set(int index, Object obj) method.
- This method replaces the specified element at the specified index in the
- ArrayList and returns the element previously at the specified position.
- */
- arrayList.set(1,"REPLACED ELEMENT");
- System.out.println("ArrayList contains...");
- //display elements of ArrayList
- for(int index=0; index < arrayList.size(); index++)
- System.out.println(arrayList.get(index));
- }
- }
- /*
- Output would be
- ArrayList contains...
- 1
- REPLACED ELEMENT
- 3
- */
