Java Stack capacity()用法及代码示例

堆栈类的capacity()方法用于获取此堆栈的容量。那就是该堆栈容器中存在的元素数。

用法:

public int capacity()

参数：该函数接受参数E obj，它是要在堆栈末尾添加的对象。

返回值：该方法返回整数值，即堆栈的容量

以下示例程序旨在说明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()); 
    } 
}

输出：

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()); 
    } 
}

输出：

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

相关用法

注：本文由纯净天空筛选整理自Code_r大神的英文原创作品 Stack capacity() method in Java with Example。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。