java vector

向量类elements()方法 (Vector 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 an enumeration of the elements that exist in this Vector.

  elements()方法用于获取此Vector中存在的元素的枚举。

• elements() method is a non-static method, it is accessible with the class object only 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，只能通过类对象访问，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 elements in an Enumeration view.

  在枚举视图中返回元素时， elements()方法不会引发异常。

Syntax:

句法：

    public 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 the method is Enumeration, it returns an Enumeration that contain all objects of this Vector.

该方法的返回类型为Enumeration ，它返回一个Enumeration，其中包含此Vector的所有对象。

Example:

例：

// Java program to demonstrate the example 
// of Enumeration elements() method 
// of Vector 
import java.util.*;
public class ElementsOfVector {
public static void main(String[] args) {
// Instantiates a Vector object  with
// initial capacity of "10"
Vector < String > v = new Vector < String > (10);
// By using add() method is to add the
// elements in this v
v.add("C");
v.add("C++");
v.add("JAVA");
// Display Vector
System.out.println("v: " + v);
// By using elements() method is to
// get all the elements into an Enumeration
// and display it with the help of for loop
System.out.println("Enumeration: ");
for (Enumeration en = v.elements(); en.hasMoreElements();)
System.out.println(en.nextElement());
}
}

Output

输出量

v: [C, C++, JAVA]
Enumeration: 
C
C++
JAVA

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

java vector