JDBC operation data and DAO design pattern in actual combat
Using JDBC to manipulate data
1. Using JDBC to write large text data to the database
Purpose: to java and other text files are written to the corresponding fields of the corresponding table by connecting the database with JDBC.
1. Table structure
2. Documents
3. Implementation code for inserting text
package LoadFileTest;
import driver.JDB ...
Posted by schoi on Wed, 25 May 2022 18:54:45 +0300
Good Java skills (summary of 7 years of working experience)
Since graduation in 2013, this year has been my seventh year of work. I am always doing Java related work. Finally, I have time to sit down and write an article on Java writing to discuss. If you are really a java programmer, can you really write Java?
This article is not a boastful article. It will not talk about many advanced architectures. O ...
Posted by Zeceer on Wed, 25 May 2022 12:03:47 +0300
Java Facade
1, Lead to the question of building a home theater:
There are DVD player, projector, automatic screen, surround sound and popcorn machine in the home theater. It is required to complete the function of using the home theater. The process is as follows:
• direct remote control: coordinate the switch of each equipment
• popcorn opener
& ...
Posted by intenseone345 on Wed, 25 May 2022 09:09:47 +0300
Summary of 9 common ES6 features (these are generally enough)
ECMAScript 6.0 (hereinafter referred to as ES6) is the next generation standard of JavaScript language, which has been officially released in June 2015. Its goal is to make JavaScript language can be used to write complex large-scale applications and become an enterprise development language. ES6 has brought us many unexpected functions. Here, ...
Posted by Gambler on Wed, 25 May 2022 00:25:11 +0300
python assignment operation, shallow copy, deep copy and detailed analysis of function transfer parameters
Students who have studied C language can distinguish between variables and pointers, while python variables are all in the form of pointers, so when assigning variables (such as a=b), they only copy the index. If you want to copy the contents of the pointer index, you need to use light copy and deep copy. Let's introduce the assignment operatio ...
Posted by carnold on Tue, 24 May 2022 19:54:06 +0300
Basic notes of C + + operator
Introduction notes to C + + Basics (III) operator Basics
Whether you learn or not, C + + is there, seducing you all the time
The content is based on the dark horse programmer c + + course handout. I added a small part and put it here as a reference for my review in the future. (this introductory course is highly recommended. It's available on ...
Posted by andy75180 on Tue, 24 May 2022 03:17:52 +0300
Java learning DAY14 packaging class, teaching class, time, exception
Packaging
6. The hash code value of the wrapper object is fixed
7. The parent class of value type wrapper class is Number
package cn.tedu.baozhuang;
public class BZDemo1 {
public static void main(String[] args) {
//The hash code value of the object of the wrapper class is a fixed value
System.out.println(new Integer(1).hash ...
Posted by chick3n on Sun, 22 May 2022 17:33:55 +0300
Java Basics (JavaSE) summary 07 - object oriented
Stage I: JavaSE learning 07
1. Comparison of object-oriented and process oriented ideas:
* * process oriented: * * is a process centered programming idea. Each step of realizing the function is realized by yourself
* * object oriented: * * is an object-centered programming idea, which realizes specific functions by commanding objects
Relationsh ...
Posted by barteelamar on Sun, 22 May 2022 09:05:50 +0300
C# visual programming image binarization tool
The manuscript was completed on May 19, 2020.
text
I hope that the order of the code copied and pasted from word is not disordered, I have been too lazy to check.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System ...
Posted by thestars on Sat, 21 May 2022 23:02:25 +0300
Interviewer: talk about redis6 Three ways to build cluster in version 0
Friends interested in PHP back-end technology and PHP architecture technology, my official group Click here , study together and discuss with each other.
There are already managers in the group to sort out the knowledge system (source code, learning videos and other materials). Welcome to add the group for free.
1, Single node instance
The s ...
Posted by alex.hughson on Fri, 20 May 2022 17:24:46 +0300