9.34.9.向Property list 裏添加值 Put value to a Property list.

import java.util.Properties;
import java.util.Set;
public class PutValueProperties{
	public static void main(String[] args){
		Properties capitals = new Properties();
		/* capitals.put("Illinois", "Springfield");
		capitals.put("Missouri", "Jefferson City");
		capitals.put("Washington", "Olympia");
		capitals.put("California", "Sacramento");
		capitals.put("Indiana", "Indianapolis"); */
		
		capitals.put("伊利諾斯州", "斯普林菲爾德");
		capitals.put("密蘇里", "傑佛遜市");
		capitals.put("華盛頓", "奧林皮亞");
		capitals.put("加里佛尼亞", "薩克拉門託");
		capitals.put("印第安納州", "印第安納波利斯");
		
		Set states = capitals.keySet();
    
		for(Object name : states){
			System.out.println(name + "/" + capitals.getProperty((String)name));
		}
		
		String str = capitals.getProperty("佛羅裏多","沒有找到");
		System.out.println("城市：佛羅裏多" + str + ".");
	}
}

E:\java\Test>java PutValueProperties
密蘇里/傑佛遜市
華盛頓/奧林皮亞
加里佛尼亞/薩克拉門託
印第安納州/印第安納波利斯
伊利諾斯州/斯普林菲爾德
城市：佛羅裏多沒有找到.