Java List search element for position index

Introduction

We can use the following API to search element in a list. 

public int indexOf(Object element)
public int lastIndexOf(Object element)

return -1 if the element is not found. 

import java.util.Arrays;
import java.util.List;
public class Main {
  public static void main(String[] a) {
    List<String> list = Arrays.asList(
        new String[] { "CSS", "HTML", "Java", "Javascript","CSS" });
    System.out.println(list.lastIndexOf("CSS"));
    System.out.println(list.indexOf("CSS"));
    //from  w  w  w . ja  va 2 s .  co m
    System.out.println(list.indexOf("demo2s.com"));
  }
}



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