setexample.java

java的集合类演示

import java.util.*;

public class SetExample
{
	public static void main(String argv[])
	{
		Set set = new HashSet();
		set.add(new Integer(5));
		set.add("abc");
		set.add(new Double(1.2));
		set.add(new Integer(5));
		set.add("abc");
		
		System.out.println(set);
	}
}