Answers for "arraylist class in java"

3

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));
}
}
Posted by: Guest on August-19-2021
15

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
Posted by: Guest on July-13-2020
7

arraylist 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 arraylist
Posted by: Guest on December-25-2020

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