Java

Convert String to CLOB in the project/** * Convert String to CLOB.* @ Author ZhaoHr* @ Param sort* @ Throws ClassNotFoundException* @ Throws SQLException*/@ SuppressWarnings ("unused ")Public int insertSortWithStr2CLOB (Sort sort) throws

As we all know, the efficiency of operators in programming languages is quite different. Today, bloggers have tested the efficiency of value assignment operations, addition, subtraction, multiplication, multiplication, modulo and bitwise operations

Exception, which must be included in the program. Although we are not happy to see it, from another perspective, exceptions indicate that the program has problems and help us to correct them in time. Sometimes there are many causes of program errors,

1. Use the Document class in the java2word package to create a new Document. The error message is: you must use Document doc = new Docuemnt () in the project. The file cannot be created. The initialization exception is java. lang. exception: An

Database Connection Pool IntroductionIn the traditional two-layer structure, the client opens the database connection at startup and closes the database connection when exiting the program. In this way, during the entire program running, each client

Java was first launched on browsers and client machines. At that time, many people questioned whether it was suitable for server-side development. Now, with the increase in third-party support for the Java2 Platform Enterprise Edition (J2EE), Java

/*Analysis: When the request. getParameter () function is called, The URI decoding process is automatically performed,The built-in decoding process during the call may cause garbled characters.After URI encoding twice, the request. getParameter ()

        Conf: stores the configuration file of the Tomcat server. The most important is the server. xml file;Logs: stores the log files of the Tomcat server;Temp: stores temporary files

Problem description: Use the javaMail package to automatically send emails Solution: (1) The jar package to be referenced using javamail is as follows: Note: To test in Win7, you only need to import the javax. mail. jar package. To test in

Java adds a new feature: variable parameters: this feature is applicable to situations where the number of parameters is uncertain and the type is determined. java treats variable parameters as arrays. Note: The variable parameter must be in the

Method Overload ): 1. In the same class 2. Same method name 3. the number or type of parameters are different. 4. It is irrelevant to the return type of the method. 5. It is irrelevant to the modifier of the method.   Override ): Method

1. Understand Annotation, http://www.cnblogs.com/mandroid/archive/2011/07/18/2109829.html 2. JUNIT overall execution process analysis, http://blog.sina.com.cn/s/blog_6e0d947501015y23.html 3. JUnit4 Extension: extends Runner. Through Runner

Today, I went to a well-known company in Beijing for an interview. I did some interview questions for the company, and then I had a simple interview. During the interview, the interviewer asked me to explain how to answer one of the questions. The

This applet can effectively count the number of lines of valid code, comments, and blank lines in a project folder (including sub-Directories) of the. java file,Try it.Package com. zhanglei. Java; Import java. io. BufferedReader;Import java. io.

Many server applications, such as Web servers, database servers, file servers, or email servers, are designed to process a large number of short tasks from some remote sources. Requests arrive at the server in a certain way, which may be through the

By default, the xcsidl plug-in of Emacs does not scan Java files. In addition, there are many. aidl files in the Android source code, which are not included in the scanning range of xcscope by default. One way to solve this problem is to manually

Overview: 1. collections (note that it is not a Collection, but a Collection, but an additional s) 2. it is a collection tool Class 3. method classification: regular operations (search, maximum, minimum, etc.), sorting, thread security

To use OSGi Annotation in Bundle, you must first define two BeanPostProcessor. We have read the previous article. Here we will take a look at it, as shown in: (figure 1) the above two beans are inherited to org. springframework. beans. factory.

I have not picked up Java for several years (N> 3 ), the reason why I wrote this article is purely for developers to use jdbc to reduce interaction and improve batch update Performance in batches. If you are a DBA, after work, you can recommend this

The byte stream processing unit is two bytes of Unicode characters, operating characters, character arrays or strings respectively, while the byte stream processing unit is one byte, operating byte and byte array. Therefore, the compaction stream is