Answers for "arraylist java class"

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 times