ArryList underlying data structure and common method source code understanding
ArryList underlying data structure and common method source code understanding
1. First look at a test code
package com.heyuanhang.conllention_;
import java.util.ArrayList;
/**
* @Author He Yuanhang
* @Date: 2021/4/17 12:57
* @Version 1.8
*/
public class ArrayListYuanMa {
public static void main(String[] args){
//The paramet ...
Posted by lailaigogo on Fri, 04 Mar 2022 11:33:55 +0100
Student Management System (ArrayList Simple Edition)
Student Management System (ArrayList Simple Edition)
Ideas for Implementing Student Management System
(1) Defining student classes
(2) Coding of the main interface
(3) Code writing for adding students
(4) View students'code writing
Delete student code writing
Modify students'code writing
Solve the problem of adding duplicate student num ...
Posted by cachemony on Sun, 13 Feb 2022 19:00:03 +0100
Java collection source code analysis: ArrayList
After so much preparation, it finally started. Ha, ArrayList Kaigan! ArrayList should be the most frequently used collection class. Let's take a look at how the document introduces it. We can know that ArrayList is actually a replica of Vector, but it only removes thread safety. ArrayList is a List implementation that can be dynamically resize ...
Posted by magie on Thu, 10 Feb 2022 17:56:56 +0100
A thorough understanding of the ArrayList source code
prefaceArrayList is a List implemented by array. Compared with array, it has the ability of dynamic expansion, so it can also be called dynamic array.Any type of data can be stored in the ArrayList collection, and it is a sequential container. The order of stored data is consistent with the order we put it in, and it also allows us to put null ...
Posted by alexscan on Thu, 10 Feb 2022 14:53:29 +0100
Summary of knowledge points [nanny level]
1, Collection
Features of collection class: it provides a storage type with variable storage space, and the stored data capacity can be changed at any time
Collection collection overview
Is the top-level interface of a single column Collection. It represents a set of objects, which are also called Collection elementsJDK does not provide an ...
Posted by JayBlake on Sun, 16 Jan 2022 07:08:11 +0100
Verify and analyze the difference between LinkedList and ArrayList by analyzing uml diagram and jdk source code
1, Overview
Recently, I want to change my job. I interviewed several people before. I feel that both sides don't see each other very much. I'm 40 years old. It's almost the end of the year. I'd better do some preparatory work. It's hard to find a job. I was not ready to find information on the Internet. I happened to see the "Huawei Danie ...
Posted by sneamia on Tue, 07 Dec 2021 09:05:50 +0100
IDEA+Java console to realize pet management system [recommended collection]
catalogue
1, System introduction
1. Development environment
2. Technical selection
3. System functions
4. Access to resources
2, System display
1. Log in to the system
2. Query pet information
3. Add pet information
4. Update pet information
5. Delete pet information
3, Partial code
BusinessService
LoginService
4, O ...
Posted by akforce on Sun, 21 Nov 2021 06:59:44 +0100
ArrayList source code analysis
10.15 analysis of ArrayList collection source code
The code used for the test is as follows
public static void main(String[] args) {
List list = new ArrayList();
for (int i = 0; i < 10; i++) {
list.add(i);
}
list.add(20);
list.add(30);
list.add(40);
}
First, create an ...
Posted by Judas on Sat, 16 Oct 2021 10:35:35 +0200