arraylist of string in java code example

Example 1: how to create a list in java

import java.util.ArrayList;
import java.util.LinkedList;
import java.util.List;

class scratch{
    public static void main(String[] args) {
        List<Integer> aList = new ArrayList<>();
        List<Integer> lList = new LinkedList<>();
    }
}

Example 2: arraylist in java

import java.util.ArrayList;
public class ArrayListExample
{
   public static void main(String[] args)
   {
      int num = 14;
      // declaring ArrayList with initial size num
      ArrayList<Integer> al = new ArrayList<Integer>(num);
      // append new element at the end of list
      for(int a = 1; a <= num; a++)
      {
         al.add(a);
      }
      System.out.println(al);
      // remove element at index 7
      al.remove(7);
      // print ArrayList after deletion
      System.out.println(al);
      // print elements one by one
      for(int a = 0; a < al.size(); a++)
      {
         System.out.print(al.get(a) + " ");
      }
   }
}

Example 3: java make arraylist

//Create the Arraylist variable: . Replace the T with the type of 
//data to be stored in the list.
ArrayList<T> exampleList = new ArrayList<>();
//You can now perform operations on this ArrayList