Java.util.ArrayDeque.remove(Object) Java.util.ArrayDeque.remove() Java.util.ArrayDeque.removeFirst() 描述 所述java.util.ArrayDeque.remove(Object)方法删除指定的单个实例元素从该双端队列。 声明 以下是java.util.ArrayDeque.remove(o)方法的声明 public boolean remove(Object o) 参数 o -如果存在 要从此双端队列中移除的元素 返回值 如果此双端队列包含指定的元素,则此方法返回true。 异常 NA 实例 以下示例显示了java.util.ArrayDeque.remove(o)方法的用法。 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 Java.util.ArrayDeque.remove() Java.util.ArrayDeque.removeFirst()