Java 实例 - 遍历 HashTable 的键值
Java 教程
· 2019-02-11 18:44:26
以下实例演示了如何使用 Hashtable 类的 keys() 方法来遍历输出键值：
Main.java 文件
import java.util.Enumeration;
import java.util.Hashtable;
public class Main {
public static void main(String[] args) {
Hashtable ht = new Hashtable();
ht.put("1", "One");
ht.put("2", "Two");
ht.put("3", "Three");
Enumeration e = ht.keys();
while (e.hasMoreElements()){
System.out.println(e.nextElement());
}
}
}
以上代码运行输出结果为：
3 2 1
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