Java Utility Library

Java ArrayList - add() Method

The java.util.ArrayList.add() method is used to add a new element at the end of the ArrayList.

Syntax

public boolean add(E element)

Here, E is the type of element maintained by the container.

Parameters

element Specify element which need to be added in the ArrayList.

Return Value

Returns true if the element is successfully added, else returns false.

Exception

Example:

In the example below, the java.util.ArrayList.add() method is used to add new element at the end of the ArrayList.

import java.util.*;

public class MyClass {
  public static void main(String[] args) {
    //creating a ArrayList
    ArrayList<Integer> MyList = 
          new ArrayList<Integer>();

    //populating ArrayList using add() method
    MyList.add(10);
    MyList.add(20);
    MyList.add(30);
    MyList.add(40);
    MyList.add(50);

    //printing ArrayList
    System.out.println("MyList contains: " + MyList);   
  }
}

The output of the above code will be:

MyList contains: [10, 20, 30, 40, 50]

Example:

Lets consider one more example where string elements are added in the given ArrayList.

import java.util.*;

public class MyClass {
  public static void main(String[] args) {
    //creating a ArrayList
    ArrayList<String> MyList = 
        new ArrayList<String>();

    //populating ArrayList using add() method
    MyList.add("MON");
    MyList.add("TUE");
    MyList.add("WED");
    MyList.add("THU");
    MyList.add("FRI");

    //printing ArrayList
    System.out.println("MyList contains: " + MyList);   
  }
}

The output of the above code will be:

MyList contains: [MON, TUE, WED, THU, FRI]

❮ Java.util - ArrayList