hashtabledemo.java

来自「这是清华大学编写的JAVA教材中所有题目的源代码！」· Java 代码 · 共 38 行

import java.util.*;

class HashtableDemo
{
	public static void main(String[] args)
	{
		Hashtable h=new Hashtable();
		/*
		String[] s={"one","two","three","four","five"};
		for(int i=0;i<5;i++)
			h.put(s[i],new Integer(i+1));
		System.out.println();
		*/
		
		h.put("one",new Integer(1));
		h.put("two",new Integer(2));
		h.put("three",new Integer(3));
		h.put("four",new Integer(4));
		h.put("five",new Integer(5));
		
		Enumeration e=h.elements();
		while(e.hasMoreElements())
			System.out.println(e.nextElement());
		System.out.println();

		Integer n=(Integer)h.get("two");
		System.out.println("two="+n);
		System.out.println();
		
		e=h.keys();
		while(e.hasMoreElements())
		{
			String key=(String)e.nextElement();
			System.out.println(key+"="+h.get(key));
		}
		System.out.println();
	}
}