java 方法示例_Java ArrayDeque带有示例的removeFirstOccurrence（）方法

java 方法示例

ArrayDeque类removeFirstOccurrence()方法 (ArrayDeque Class removeFirstOccurrence() method)

removeFirstOccurrence() method is available in java.lang package.
removeFirstOccurrence()方法在java.lang包中可用。
removeFirstOccurrence() method is used to remove the first occurrence of the given element in this deque.
removeFirstOccurrence()方法用于删除此双端队列中给定元素的首次出现。
removeFirstOccurrence() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.
removeFirstOccurrence()方法是一个非静态方法，仅可通过类对象访问，如果尝试使用类名访问该方法，则会收到错误消息。
removeFirstOccurrence() method does not throw an exception at the time of removing the first occurrence of the given object.
removeFirstOccurrence()方法在删除给定对象的第一次出现时不会引发异常。

Syntax:

句法：

    public boolean removeFirstOccurrence (Object obj);

Parameter(s):

参数：

Object obj – represents the element to be removed of the first occurrence from this deque.
对象obj –表示从此双端队列首次出现时要删除的元素。

Return value:

返回值：

The return type of this method is boolean, it returns true if the given element is removed successfully, else it returns false.

此方法的返回类型为boolean ，如果成功删除给定元素，则返回true ，否则返回false 。

Example:

例：

// Java program to demonstrate the example 
// of boolean removeFirstOccurrence(Object obj) 
// method of ArrayDeque 
import java.util.*;
public class RemoveFirstOccurrenceOfArrayDeque {
public static void main(String[] args) {
// Creating an ArrayDeque with initial capacity of
// storing elements
Deque < String > d_queue = new ArrayDeque < String > (10);
// By using add() method to add elements
// in ArrayDeque
d_queue.add("C");
d_queue.add("C++");
d_queue.add("Java");
d_queue.add("Php");
d_queue.add("DotNet");
d_queue.add("Java");
// Display Deque Elements
System.out.println("d_queue before removeFirstOccurrence(): ");
System.out.println("ArrayDeque Elements = " + d_queue);
System.out.println();
// By using removeFirstOccurrence() method to remove
// the first occurrence of the given element "Java"
d_queue.removeFirstOccurrence("Java");
System.out.println();
// Display Deque Elements
System.out.println("d_queue after removeFirstOccurrence(): ");
System.out.println("ArrayDeque Elements = " + d_queue);
}
}

Output

输出量

d_queue before removeFirstOccurrence(): 
ArrayDeque Elements = [C, C++, Java, Php, DotNet, Java]d_queue after removeFirstOccurrence(): 
ArrayDeque Elements = [C, C++, Php, DotNet, Java]