Java Stack capacity()用法及代碼示例

堆棧類的capacity()方法用於獲取此堆棧的容量。那就是該堆棧容器中存在的元素數。

用法:

public int capacity()

參數：該函數接受參數E obj，它是要在堆棧末尾添加的對象。

返回值：該方法返回整數值，即堆棧的容量

以下示例程序旨在說明Java.util.Stack.capacity()方法：

示例1:

// Java code to illustrate boolean capacity() 
  
import java.util.*; 
import java.util.ArrayList; 
  
public class GFG { 
    public static void main(String args[]) 
    { 
        // Creating an empty Stack 
        Stack<String> stack = new Stack<String>(); 
  
        // Use add() method to add elements in the Stack 
        stack.add("Geeks"); 
        stack.add("for"); 
        stack.add("Geeks"); 
        stack.add("10"); 
        stack.add("20"); 
  
        // Displaying the Stack 
        System.out.println("The Stack is: " + stack); 
  
        // checking capacity 
        System.out.println("Capacity: "
                           + stack.capacity()); 
    } 
}

輸出：

The Stack is: [Geeks, for, Geeks, 10, 20]
Capacity: 10

示例2:

// Java code to illustrate 
// boolean add(Object element) 
  
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 in the Stack 
        stack.add(10); 
        stack.add(20); 
        stack.add(30); 
        stack.add(40); 
        stack.add(50); 
  
        // Displaying the Stack 
        System.out.println("The Stack is: " + stack); 
  
        // checking capacity 
        System.out.println("Capacity: "
                           + stack.capacity()); 
    } 
}

輸出：

The Stack is: [10, 20, 30, 40, 50]
Capacity: 10

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 capacity() 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。