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从哈希映射创建哈希表
/*来 自 n o w j a v a . c o m - 时 代 Java*/ import java.util.Enumeration; import java.util.Hashtable; import java.util.HashMap; public class Main { public static void main(String[] args) { HashMap hMap = new HashMap(); hMap.put("1","One"); hMap.put("2","Two"); hMap.put("3","Three"); Hashtable ht = new Hashtable(); /** 时 代 J a v a - N o w J a v a . c o m 提供 **/ ht.put("1","This value would be REPLACED !!"); ht.put("4","Four"); System.out.println("Hashtable contents before copy"); Enumeration e = ht.elements(); while(e.hasMoreElements()) System.out.println(e.nextElement()); ht.putAll(hMap)