LinkedList公共布爾布爾offerFirst(Object o)方法 (LinkedList public boolean offerFirst(Object o) method)

• This method is available in package java.util.LinkedList.offerFirst(Object o).

  軟件包java.util.LinkedList.offerFirst(Object o)中提供了此方法。

• This method is used to add a specified object at the front of the linked list.

  此方法用于在鏈接列表的開頭添加指定的對象。

Syntax:

句法：

public boolean offerFirst(Object o){}

Parameter(s):

參數(shù)：

We can pass only one object as a parameter in the method and that object will add at the front element of the linked list.

我們只能在方法中傳遞一個對象作為參數(shù)，并且該對象將添加到鏈接列表的最前面。

Return value:

返回值：

The return type of this method is boolean that means this method returns true after execution.

該方法的返回類型為布爾值 ，這意味著該方法在執(zhí)行后返回true。

Java程序演示LinkedList offerFirst(Object o)方法的示例 (Java program to demonstrate example of LinkedList offerFirst(Object o) method)

import java.util.LinkedList;public class LinkList {public static void main(String[] args) {LinkedList list = new LinkedList();// use add() method to add elements in the list list.add(10);list.add(20);list.add(30);list.add(40);list.add(50);// Current list OutputSystem.out.println("The Current list is:" + list);// Add new element at the front of the // linked list using offerFirst(Object o)list.offerFirst(60);// New list Output System.out.println("The new List is:" + list);} }

Output

輸出量

D:\Programs>javac LinkList.javaD:\Programs>java LinkList The Current list is:[10, 20, 30, 40, 50] The new List is:[60, 10, 20, 30, 40, 50]

翻譯自: https://www.includehelp.com/java/linkedlist-public-boolean-offerfirst-object-o-method-with-example.aspx

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