Java Array Lists Code Examples

Java Arrays Lists Code Examples using Iterators, Using for loop, Deleting an Element from List, Removing an Element from a List, Swap a Elements in a List…

	import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;

Using Iterator

	public class Main {
    public static void main(String[] args) {
        List < String > names = new ArrayList < String > ();

        names.add("Liam");
        names.add("Noah");
        names.add("Oliver");

        System.out.println("Using Iterator");
        Iterator < String > str = names.iterator();

        while (str.hasNext()) {
            System.out.println(str.next());
        }
    }
}

	// Using Iterator
// Liam
// Noah
// Oliver

Using For Loop

	public class Main {
    public static void main(String[] args) {
        List < String > names = new ArrayList < String > ();

        names.add("Liam");
        names.add("Noah");
        names.add("Oliver");

        System.out.println("Using forLoop");
        int x = names.size();

        for(int i = 0 ; i < x ; i++){
            System.out.println(names.get(i));
        }
    }
}

	// Using forLoop
// Liam
// Noah
// Oliver

Copying to a new List

	public class Main {
    public static void main(String[] args) {
        List < String > names = new ArrayList < String > ();

        names.add("Liam");
        names.add("Noah");
        names.add("Oliver");

        ArrayList<String> newList = new ArrayList<String>(names);

        //after copyling

        System.out.println("Copying " + newList);

    }
}

	// Copying [Liam, Noah, Oliver]

Deleting an element from a list

	public class Main {
    public static void main(String[] args) {
        List < String > names = new ArrayList < String > ();

        names.add("Liam");
        names.add("Noah");
        names.add("Oliver");

        names.remove(1);
        names.remove("Noah");

        System.out.println(names);

    }
}

	// [Liam, Oliver]

Reverse Elements in List

	public class Main {
    public static void main(String[] args) {
        List < String > names = new ArrayList < String > ();

        names.add("Liam");
        names.add("Noah");
        names.add("Oliver");

        Collections.reverse(names);
        System.out.println(names);

    }
}

	// [Oliver, Noah, Liam]

Shuffles a Elements in List

	public class Main {
    public static void main(String[] args) {
        List < String > names = new ArrayList < String > ();

        names.add("Liam");
        names.add("Noah");
        names.add("Oliver");

        Collections.shuffle(names);
        System.out.println(names);

    }
}

	// [Liam, Oliver, Noah]

Swap Elements in List

	public class Main {
    public static void main(String[] args) {
        List < String > names = new ArrayList < String > ();

        names.add("Liam");
        names.add("Noah");
        names.add("Oliver");

        Collections.swap(names, 1, 2);
        System.out.println(names);

    }
}

	// [Liam, Oliver, Noah]

Java Array Lists Code Examples

Using Iterator

Using For Loop

Copying to a new List

Deleting an element from a list

Reverse Elements in List

Shuffles a Elements in List

Swap Elements in List

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