JAVA

how to add to an arraylist java

import java.util.ArrayList;
public class Details {
    public static void main(String[] args) {

        //ArrayList<String> Declaration
        ArrayList<String> al= new ArrayList<String>();
        //add method for String ArrayList
        al.add("Ram");
        al.add("Shyam");
        al.add("CPS");
        al.add("John");
        al.add("Steve");
        System.out.println("Elements of ArrayList of String Type: "+al);

Java Add Elements to an ArrayList

import java.util.ArrayList;

class Main {
  public static void main(String[] args){
    // create ArrayList
    ArrayList<String> languages = new ArrayList<>();

    // add() method without the index parameter
    languages.add("Java");
    languages.add("C");
    languages.add("Python");
    System.out.println("ArrayList: " + languages);
  }
}

Add an element to ArrayList using addall() method

import java.util.ArrayList;
import java.util.HashSet;

class Main {
  public static void main(String[] args) {

    // create a set
    HashSet<String> vowels = new HashSet<>();
    vowels.add("a");
    vowels.add("e");
    vowels.add("i");
    vowels.add("o");
    vowels.add("u");

    // create an arraylist
    ArrayList<String> alphabets = new ArrayList<>();

    // add all elements of set to arraylist
    alphabets.addAll(vowels);
    System.out.println("ArrayList: " + alphabets);
  }
}

add value to arraylist

List<String> list = List.of("first", "second", "third");

Add items to ArrayList Using add() function

import java.util.ArrayList;

class Main {
  public static void main(String[] args){

    // create ArrayList
    ArrayList<String> Websites = new ArrayList<>();

    // add() method without the index parameter
    Websites.add("Softhunt.net");
    Websites.add("Pythonprogramming.com");
    Websites.add("Tutorial.io");
    System.out.println("ArrayList: " + Websites);
  }
}