Java
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Shift operators in Java: <, > >, > > > summary
There are three shift operators in Java < <: shift left operator, Num < < 1, equivalent to num multiplied …… -
There are several states of Java objects in hibernate. How are they related to each other (distinction and mutual transformation)
I spent some time understanding several states of Java objects in hibernate. It's easy to understand. Here's a record …… -
Java development_ Imitate Baidu Library_ SWFTools_ Source download
I wrote an article before: Step 2 today: SWF (pdf2swf) Before doing this, we should also make some preparations: ： ja…… -
Java multithreading series_ Thread Introduction (1)
1、 Thread overview Thread is the basic execution unit of a program. When the operating system (excluding the single t…… -
Java development_ Generate / parse your own QR code QR code
When I saw a tool for generating QR code, I came up with an idea: Why not make a QR code generation and analysis tool?…… -
Common resource arrangement based on Java platform
Here is a collection of tools for building applications: Maven uses declarations to build and manage dependencies, pre…… -
Java development_ Eclipse is exported as a war file and hot deployed to Tomcat to run the summary
In MyEclipse, we can easily do this step: generate a war file from a web project In fact, in eclipse, it is also very …… -
Hadoop 2-mapreduce details
This article is about Hadoop 2 MapReduce version 2.0 will be explained in detail. Please pay attention to the version,…… -
Java development_ Imitate Baidu Library_ OpenOffice2PDF_ Source download
I've been studying and imitating things similar to Baidu Library these days. Here I'll share with you what I've done m…… -
String objects can be assigned with “=” or “new”. What is the difference between the two methods?
When you see the title, you may subconsciously think about the difference between the two methods? Take a look at the …… -
Java development_ The difference between ” and null
I have a problem at work today: In the code: The following is the difference between null and '' in Java: -
Java interview questions_ Good things to share with you
There are many online yes, you can look at the interview Manual of IT company. Java interview questions spring inter…… -
Maven study notes
Study notes Select apache-maven-3.3 9-bin. Zip download and unzip. Configure environment variable: create a new enviro…… -
A pen test question
Today, I went to an interview with a foreign-funded company and encountered a test question The topic is as follows: H…… -
Maven’s first applet
Here is the first applet about Maven About Maven installation: First look at the directory structure: This is the orig…… -
Get the image file(s) some informations,Including the Make,Model,Date/Time,etc
This is a blog about how to get the image file(s) some informations. Including the Make,Model,Date/Tiime,etc. while,ho…… -
Java drawing program_ The picture is drawn with letters
Recently, I have been studying how to "draw" pictures with letters in text editing tools. You may not know what I want…… -
Lucene (full text search)_ Indexing_ Full text search by keyword_ Source download
： ： Add these two jar packages to the project build path Look at the project structure -
Java development_ Conversion of numbers to capitalization of RMB in Chinese_ Full version
This application comes from a sudden idea: see that the number on the invoice should be converted into the capital of …… -
Java Web Development_ Multi take / Taobao shopping cart selection
Look at the title. I think you will feel a little confused. Don't panic. Let's take a look at some examples first. It …… -
Using code to automatically generate packages in eclipse_ This function is very useful_ Java version
I did an experiment before, that is, I used code to automatically create a new package in eclipse, which was not imple…… -
For an algorithm with a running time of 100N * n, what is the minimum value of n to make it run faster on the same machine than an algorithm with a running time of 2 ^ n
In the first part of the introduction to algorithms, there is such an algorithm problem: Here are my own ideas for sol…… -
Java implements the transfer of txt files in any coding mode to UTF-8 coding mode
This paper uses BufferedReader and bufferedwriter in JDK to transfer txt files of any coding mode to UTF-8 coding mode…… -
The difference between get and post methods
In the process of submitting data from the form, the method attribute provides two values: get and post. The default i…… -
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Java development_ Quick search for local files_ Applet
This is an application running effect Then I had a whim. I had an application called: Why not modify its source code a…… -
Java development_ Get database table description in MySQL_ Source download
In the MySQL database, there are two tables: ,test_ table We need to get the description information of table: and the…… -
Java multithreading series_ Create a thread using the runnable interface (3)
A class implementing the runnable interface must use an instance of the thread class to create a thread. Creating a th…… -
Java abstract classes and interfaces
When the base class is abstract, some functions cannot be implemented. For example, for animal classes, you can know h……