字典类的elements()方法 (Dictionary Class elements() method)

• elements() method is available in java.util package.

  elements()方法在java.util包中可用。

• elements() method is used to get the elements of an Enumeration in this dictionary.

  elements()方法用于获取此字典中Enumeration的元素。

• elements() method is a non-static method, it is accessible with the class object and if we try to access the method with the class name then we will get an error.

  elements()方法是一种非静态方法，可通过类对象访问，如果尝试使用类名称访问该方法，则会收到错误消息。

• elements() method does not throw an exception at the time of returning Enumeration elements.

  返回Enumeration元素时， elements()方法不会引发异常。

Syntax:

句法：

    public abstract Enumeration elements();

Parameter(s):

参数：

• It does not accept any parameter.

  它不接受任何参数。

Return value:

返回值：

The return type of this method is Enumeration, it returns values of an Enumeration.

此方法的返回类型为Enumeration ，它返回Enumeration的值。

Example:

例：

// Java program is to demonstrate the example of
// elements() method of Dictionary
import java.util.*;
public class ElementsOfDictionary {public static void main(String[] args) {// Instantiate a Hashtable object
Dictionary dict = new Hashtable();
// By using put() method is to
// add an elements in Hashtable
dict.put(1, "C");
dict.put(2, "C++");
dict.put(3, "JAVA");
dict.put(4, "PHP");
dict.put(5, "SFDC");
// Display Hashtable elements in the form
// of an enumeration
for (Enumeration en = dict.elements(); en.hasMoreElements();) {System.out.println(en.nextElement());
}
}
}

Output

输出量

SFDC
PHP
JAVA
C++
C

翻译自: https://www.includehelp.com/java/dictionary-elements-method-with-example.aspx