how to make an array of arraylists in java
ArrayList<Integer> [] myList = (ArrayList<Integer>[]) new ArrayList[4];how to make an array of arraylists in java
ArrayList<Integer> [] myList = (ArrayList<Integer>[]) new ArrayList[4];java arraylist
import java.util.List; //list abstract class
import java.util.ArrayList; //arraylist class
//Object Lists
List l = new ArrayList();
ArrayList a = new ArrayList();
//Specialized List
List<String> l = new ArrayList<String>();
ArrayList<Integer> a = new ArrayList<Integer>();
//only reference data types allowed in brackets <>
//Initial Capacity
List<Double> l = new ArrayList<Double>(5);
//list will start with a capacity of 5
//saves allocation timesHow to create an ArrayList
import java.util.*;
class JavaExample{
public static void main(String args[]){
ArrayList<String> alist=new ArrayList<String>();
alist.add("Steve");
alist.add("Tim");
alist.add("Lucy");
alist.add("Pat");
alist.add("Angela");
alist.add("Tom");
//displaying elements
System.out.println(alist);
//Adding "Steve" at the fourth position
alist.add(3, "Steve");
//displaying elements
System.out.println(alist);
}
}how to create an array list in java
List<Integer> list = new ArrayList<>();how to declare array of arraylist in java
List<List<Individual>> group = new ArrayList<List<Individual>>(4);Copyright © 2021 Codeinu
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