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/* 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 */ |
not bad information.
good