Remove Duplicates From ArrayList Without Collection In Java

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import java.util.ArrayList;

public class JavaArrayListRemoveDuplicates {

	public static void main(String[] args) {

		ArrayList<Object> al = new ArrayList<Object>();

		al.add("java");
		al.add('a');
		al.add('b');
		al.add('a');
		al.add("java");
		al.add(33);
		al.add("Scan");
		al.add(30);
		al.add("java");
		al.add(30);

		System.out.println("Before Remove Duplicate elements:" + al);

		for (int i = 0; i < al.size(); i++) {

			for (int j = i + 1; j < al.size(); j++) {
				if (al.get(i).equals(al.get(j))) {
					al.remove(j);
					j--;
				}
			}

		}
		System.out.println("After Removing duplicate elements:" + al);

	}
}
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