ArrayList Operations In Java Example

Chapter: Data Structures Last Updated: 10-04-2016 19:31:04 UTC

Program:

            /* ............... START ............... */
                
import java.util.ArrayList;

public class JavaArrayList {
	public static void main(String[] a) {

		ArrayList<String> al = new ArrayList<String>();
		// add elements to the ArrayList
		al.add("JAVA");
		al.add("C++");
		al.add("PERL");
		al.add("PHP");
		System.out.println(al);
		// get elements by index
		System.out.println("Element at index 1: " + al.get(1));
		System.out.println("Does list contains JAVA? " + al.contains("JAVA"));
		// add elements at a specific index
		al.add(2, "PLAY");
		System.out.println(al);
		System.out.println("Is arraylist empty? " + al.isEmpty());
		System.out.println("Index of PERL is " + al.indexOf("PERL"));
		System.out.println("Size of the arraylist is: " + al.size());
	}
}
                /* ............... END ............... */
        

Output

[JAVA, C++, PERL, PHP]
Element at index 1: C++
Does list contains JAVA? true
[JAVA, C++, PLAY, PERL, PHP]
Is arraylist empty? false
Index of PERL is 3
Size of the arraylist is: 5

Notes:

  • Basic ArrayList operations like creating object for ArrayList, adding objects into ArrayList, accessing objects based on index, searching an object in ArrayList.

Tags

ArrayList Operations,Java

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