package collection.deng;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Hashtable;

public class collection {
	public static void main(String[] args) {
		SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
		Date tab1 = new Date();
		System.out.println("Hasetable測試開始時間" + format.format(tab1));
		addHashtable();
		Date tab2 = new Date();
		System.out.println("Hasetable測試結束時間" + format.format(tab2));
		System.out.println("用時" +(tab2.getTime()-tab1.getTime()));
		
		
		Date map1 = new Date();
		System.out.println("HashMap測試開始時間" + format.format(map1));
		addHashMap();
		Date map2 = new Date();
		System.out.println("HashMap測試結束時間" + format.format(map2));
		System.out.println("用時" +(map2.getTime()-map1.getTime()));
	}
	
	public static void addHashtable(){
		Hashtable<String, String> table = new Hashtable<String, String>();
		for(int i=0;i<10000;i++){
			table.put(i+"key", i+"value");
		}
	}
	
	public static void addHashMap(){
		HashMap<String, String> map = new HashMap<String, String>();
		for(int i=0;i<10000;i++){
			map.put(i+"key", i+"value");
		}
	}
}

 

Hasetable測試開始時間2016-08-06 21:05:11
Hasetable測試結束時間2016-08-06 21:05:11
用時32
HashMap測試開始時間2016-08-06 21:05:11
HashMap測試結束時間2016-08-06 21:05:11
用時15