Java.util.ArrayDeque.remove(Object) 方法

描述

java.util.ArrayDeque.remove(Object) 方法从这个 deque 中删除指定 element 的单个实例。

声明

以下是 java.util.ArrayDeque.remove(o) 方法的声明

public boolean remove(Object o)

参数

o − 要从此双端队列中删除的元素（如果存在）

返回值

如果此双端队列包含指定元素，则此方法返回 true。

异常

NA

示例

下面的例子展示了 java.util.ArrayDeque.remove(o) 方法的使用。

package com.tutorialspoint;

import java.util.ArrayDeque;
import java.util.Deque;

public class ArrayDequeDemo {
   public static void main(String[] args) {
      
      // create an empty array deque with an initial capacity
      Deque<Integer> deque = new ArrayDeque<Integer>(8);

      // use add() method to add elements in the deque
      deque.add(25);
      deque.add(30);
      deque.add(20);
      deque.add(40);        

      // printing all the elements available in deque
      for (Integer number : deque) {
         System.out.println("Number = " + number);
      }

      // deque contains element 30, returns true
      boolean retval = deque.remove(30); 
      if (retval == true) {
         System.out.println("element 30 is removed from the deque");
      } else {
         System.out.println("element 30 is not contained in the deque");
      }
         
      // deque does not contain element 15, returns false
      boolean returnval = deque.remove(15); 
      if (returnval == true) {
         System.out.println("element 15 is removed from the deque");
      } else {
         System.out.println("element 15 is not contained in the deque");  
      }

      // printing remaining elements
      for (Integer number : deque) {
         System.out.println("Number = " + number);
      }  
   }  
}

让我们编译并运行上面的程序，这将产生以下结果 −

Number = 25
Number = 30
Number = 20
Number = 40
element 30 is removed from the deque
element 15 is not contained in the deque
Number = 25
Number = 20
Number = 40