import java.util.Dictionary; import java.util.Hashtable; public class Test { public static void main(String[] args) { Dictionary<String, String> hashTable = new Hashtable<String, String>(); // Dictionary是抽象类,由其子类Hashtable实现 hashTable.put("s1", "baidu"); hashTable.put("s2", "google"); String str = hashTable.get("s1"); System.out.println("s1=" + str); str = hashTable.get("s2"); System.out.println("s2=" + str); } }