package com.platform.test;

import java.util.HashSet;
import java.util.Set;

import org.junit.Test;

public class SetTest {
	
	@Test
	public void testSet() {
		Set<String> set = new HashSet<String>();
		set.add("a");
		set.add("a");
		set.add("b");
		set.add("c");
		System.out.println(set.size());
		set.remove("c");
		System.out.println(set.size());
		set.remove("a");
		System.out.println(set.size());

	}

}