Java ArrayDeque remove()方法

java.util.ArrayDeque.remove(Object) 此方法从此双端队列删除指定元素的单个实例。

1 语法

public boolean remove(Object o)

2 参数

o：要从此双端队列移除的元素（如果存在）

3 返回值

如果此双端队列包含指定的元素，则此方法返回true。

4 示例 

package com.yiidian;

/**
 * 一点教程网： http://www.yiidian.com
 */
/**
 * java.util.ArrayDeque.remove(Object)方法的例子
 */
import java.util.ArrayDeque;
import java.util.Deque;

public class Demo {
    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);
        }
    }
}

输出结果为：

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