arraylist of objects in java
public static void main(String args[]){
ArrayList<Dog> doglist= new ArrayList<Dog>();
doglist.add(new Dog(“Joe”,”Husky”,3, white));
doglist.add(new Student(“Flash”,”German Shepherd",1, brown));
doglist.add(new Student(“Jason”,”Pitbull”,5,brown));
}
}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 timesarraylist java
//requires either one of these two imports, both work.
import java.util.ArrayList;
//--or--
import java.util.*
ArrayList<DataType> name = new ArrayList<DataType>();
//Defining an arraylist, substitute "DataType" with an Object
//such as Integer, Double, String, etc
//the < > is required
//replace "name" with your name for the arraylistCopyright © 2021 Codeinu
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