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Replace an element from a Java List using ListIterator
Let us first create a Java List and add elements −
ArrayList < String > list = new ArrayList < String > ();
list.add("Katie");
list.add("Tom");
list.add("Jack");
list.add("Amy");
list.add("Andre");
list.add("Brad");
list.add("Peter");
list.add("Bradley");Now, use ListIterator and return the next element in the List with next() −
ListIterator<String>iterator = list.listIterator(); iterator.next();
Replace the element in the List with set() method. Here, whatever element is set will get replaced as the first element of the Iterator −
iterator.set("Angelina");Example
import java.util.ArrayList;
import java.util.ListIterator;
public class Demo {
public static void main(String[] args) {
ArrayList<String>list = new ArrayList<String>();
list.add("Katie");
list.add("Tom");
list.add("Jack");
list.add("Amy");
list.add("Andre");
list.add("Brad");
list.add("Peter");
list.add("Bradley");
System.out.println("Initial list..");
for (String str: list) {
System.out.println(str);
}
ListIterator<String>iterator = list.listIterator();
iterator.next();
iterator.set("Angelina");
System.out.println("After replacing an element...");
for (String str: list) {
System.out.println(str);
}
}
}Output
Initial list.. Katie Tom Jack Amy Andre Brad Peter Bradley After replacing an element... Angelina Tom Jack Amy Andre Brad Peter Bradley
Updated on: 30-Jul-2019
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