Java中的 Stack elements() 方法与示例

Java 中 Stack 类的Java Java ()方法用于获取 Stack 中存在的值的枚举。

句法：

Enumeration enu = Stack.elements()

参数：该方法不带任何参数。

返回值：该方法返回堆栈值的枚举。

以下程序用于说明Java.util.Stack.elements() 方法的工作原理：

方案一：

// Java code to illustrate the elements() method
import java.util.*;
  
public class Stack_Demo {
    public static void main(String[] args)
    {
  
        // Creating an empty Stack
        Stack stack = new Stack();
  
        // Inserting elements into the table
        stack.add("Geeks");
        stack.add("4");
        stack.add("Geeks");
        stack.add("Welcomes");
        stack.add("You");
  
        // Displaying the Stack
        System.out.println("The Stack is: " + stack);
  
        // Creating an empty enumeration to store
        Enumeration enu = stack.elements();
  
        System.out.println("The enumeration of values are:");
  
        // Displaying the Enumeration
        while (enu.hasMoreElements()) {
            System.out.println(enu.nextElement());
        }
    }
}

输出：

The Stack is: [Geeks, 4, Geeks, Welcomes, You]
The enumeration of values are:
Geeks
4
Geeks
Welcomes
You

方案二：

import java.util.*;
  
public class Stack_Demo {
    public static void main(String[] args)
    {
  
        // Creating an empty Stack
        Stack stack = new Stack();
  
        // Inserting elements into the table
        stack.add(10);
        stack.add(15);
        stack.add(20);
        stack.add(25);
        stack.add(30);
  
        // Displaying the Stack
        System.out.println("The Stack is: " + stack);
  
        // Creating an empty enumeration to store
        Enumeration enu = stack.elements();
  
        System.out.println("The enumeration of values are:");
  
        // Displaying the Enumeration
        while (enu.hasMoreElements()) {
            System.out.println(enu.nextElement());
        }
    }
}

输出：

The Stack is: [10, 15, 20, 25, 30]
The enumeration of values are:
10
15
20
25
30