testhashtable.java

来自「CMM编译器词法分析及语法分析代码」· Java 代码 · 共 20 行

package try_sw;
import java.util.*;

public class TestHashtable {
    public static void main(String[] args){
        Hashtable ht = new Hashtable();
        ht.put("sichuan","chengdu"); //改变以下四行代码的顺序，可能会改变输出内容的顺序    
        ht.put("hunan","changsha");     
        ht.put("beijing","beijing");    
        ht.put("anhui","hefei");    
        
    Enumeration e = ht.keys();
    while(e.hasMoreElements()) {
        Object key = e.nextElement();
        Object value = ht.get(key);            
        System.out.println(key + " " + value + " " + key.hashCode() + " " + value.hashCode());
    }
        
    }
}