Java Stack toArray()用法及代碼示例

Java中Stack類的toArray()方法用於生成與Stack相同元素的數組。本質上，它將所有元素從堆棧複製到新數組。

用法:

Object[] arr = Stack.toArray()

參數：該方法不帶任何參數。

返回值：該方法返回一個包含與Stack類似的元素的數組。

以下示例程序旨在說明Stack.toArray()方法：

示例1:

// Java code to illustrate toArray() 
  
import java.util.*; 
  
public class StackDemo { 
    public static void main(String args[]) 
    { 
        // Creating an empty Stack 
        Stack<String> stack = new Stack<String>(); 
  
        // Use add() method to add elements into the Stack 
        stack.add("Welcome"); 
        stack.add("To"); 
        stack.add("Geeks"); 
        stack.add("For"); 
        stack.add("Geeks"); 
  
        // Displaying the Stack 
        System.out.println("The Stack: " + stack); 
  
        // Creating the array and using toArray() 
        Object[] arr = stack.toArray(); 
  
        System.out.println("The array is:"); 
        for (int j = 0; j < arr.length; j++) 
            System.out.println(arr[j]); 
    } 
}

輸出：

The Stack: [Welcome, To, Geeks, For, Geeks]
The array is:
Welcome
To
Geeks
For
Geeks

示例2:

// Java code to illustrate toArray() 
  
import java.util.*; 
  
public class StackDemo { 
    public static void main(String args[]) 
    { 
        // Creating an empty Stack 
        Stack<Integer> stack = new Stack<Integer>(); 
  
        // Use add() method to add elements into the Stack 
        stack.add(10); 
        stack.add(15); 
        stack.add(30); 
        stack.add(20); 
        stack.add(5); 
        stack.add(25); 
  
        // Displaying the Stack 
        System.out.println("The Stack: " + stack); 
  
        // Creating the array and using toArray() 
        Object[] arr = stack.toArray(); 
  
        System.out.println("The array is:"); 
        for (int j = 0; j < arr.length; j++) 
            System.out.println(arr[j]); 
    } 
}

輸出：

The Stack: [10, 15, 30, 20, 5, 25]
The array is:
10
15
30
20
5
25

相關用法

注：本文由純淨天空篩選整理自Code_r大神的英文原創作品 Stack toArray() method in Java with Example。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。