java去掉陣列中重複的資料和遍歷資料

package oa.test;

import java.util.Iterator;
import java.util.List;

public class TestDistinct {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		String [] s ={"a-1","b-1","a-1"};
		List l = new java.util.ArrayList();
		for(int i=0; i< s.length; i++){
			if(!l.contains(s[i]))
				l.add(s[i]);
		}		
		for(Iterator ll = l.iterator(); ll.hasNext();)  
            System.out.println(ll.next());  	

	}

}