hashsetdemo.java

来自「java的书上例子」· Java 代码 · 共 21 行

//例15-2. HashSetDemo.java

import java.util.*;

public class HashSetDemo {
	public static void main(String[] args) {
		Set s = new HashSet();
		s.add("Hello");
		s.add("World");
		s.add(new Character('我'));
		s.add(new Integer(23));
		s.add("Hello");
		String[] as = {"W","o","r","l","d"};
		s.add(as);
		s.add(null);
		s.add(new Integer(23));
		s.add(null);
		System.out.println(s);
	}
}