ArrayList or LinkedList

ArrayList or LinkedList

import java.util.*;

public class TestArrayLinked {
    public static void main(String args[]) {

        List<String> al = new ArrayList<String>();// creating arraylist
        al.add("Ravi");// adding object in arraylist
        al.add("Vijay");
        al.add("Ravi");
        al.add("Ajay");

        List<String> al2 = new LinkedList<String>();// creating linkedlist
        al2.add("James");// adding object in linkedlist
        al2.add("Serena");
        al2.add("Swati");
        al2.add("Junaid");

        System.out.println("arraylist: " + al);
        System.out.println("linkedlist: " + al2);
    }
} 

点击查看结果

arraylist: [Ravi, Vijay, Ravi, Ajay]
linkedlist: [James, Serena, Swati, Junaid]