Remove Duplicate Character from a given String or find Unique alphabet in a given string

Remove Duplicate Character from a given String or find Unique alphabet in a given string

SOURCE : DuplicateCharacterRemove.java

import java.util.HashSet;

public class DuplicateCharacterRemove {

	/**
	 * @param args
	 */
	public static void main(String[] args){
		String s = "AABBCCDBBEEFF";
		HashSet hset = new HashSet();
		for(Character c : s.toCharArray()){
			
			if (!(hset.contains(c))){
				hset.add(c);
			}
			
			
			}
		System.out.println(hset);
		}
	}



 

INPUT

String s = "AABBCCDBBEEFF";

OUTPUT

[A, B, C, D, E, F]

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