java practice projects

Experimental content:Agile Development and XP practice an experimental requirement: Install the Alibaba plugin, solve the code problem in the idea using the tool (Code->reformate code) to reformat the code below, and then examine the Code menu to find a feature that makes you feel best. Submit, plus your own study number watermark. Experimental steps:1. Install the Alibaba plugin as required by the teacher's blog2. Create a new Codestandard projectEnt

Need to support polling, timed locks. A lock is required for an interruptible lock fetch operation. You want to use a lock in a non-block structure. Learn about an explicit lock that supports more advanced operations. Java 5.0 New Reentrantlock is not an alternative to built-in locking, but an optional advanced feature when the built-in locking mechanism does not apply. 13.1 Lock and Reentrantlock The Reentrantlock implements the lock interface, provi

Java Drp project practice-Servlet, drpservletOrigin Before explaining the Servlet, we need to first introduce a word CGI, that is, the Common GatewayInterface is the meaning of a universal gateway interface, which provides an interface for a computer program with the HTTP protocol or WWW Service, that is, the meaning of the human-computer interaction interface. When a Web application runs on a server and a

comes to declaring class instance variables. Why is this class final?For developers, declare the classfinalBut it does not explain why this decision was made. This practice is common, especially in open source code projects. After a while, especially if the original developer no longer participates in code maintenance, other developers will always ask "Why Class X is declaredfinal?". Generally, no one know

Java Drp project practice-ServletOrigin Before explaining the Servlet, we need to first introduce a word CGI, that is, the Common GatewayInterface is the meaning of a universal gateway interface, which provides an interface for a computer program with the HTTP protocol or WWW Service, that is, the meaning of the human-computer interaction interface. When a Web application runs on a server and a client req

Daily development, operation and maintenance process often encounter the following issues: Under what circumstances do I need to output a log? How do I choose the log level when I explicitly need to output a log? What do I need to output in the log when I explicitly need to output the log? A tomcat loads multiple projects, how do you determine what works in the log? Multiple Tomcat loads the same project at the same time, can you use

To exercise your Java coding capabilities, plan to do three more complete projects, namely:1.OA System Wisdom Podcast Soup Sunshine Edition;2. The e-shop is also the teacher's name of the Preach Wisdom podcast forgotten;3.BBS Academy Horse Soldiers;This group of essays is to follow up on the progress of these three projects, to document the problems encountered d

[Java concurrent programming practice] -- synchronized, asynchronous ynchronized In our practical application, we may often encounter such a scenario: multiple threads read or write the same data, access the same file, and so on. If we do not control this situation, it is very easy to cause errors. In java, the concept of critical section is introduced to solve t

, it is more efficient than the normal array transfer, but because the construction/destruction/maintenance of the shared memory cost is relatively large, so the small data of the array is recommended to use the same method, Direct The buffer mode is more suitable for long-term sharing of large chunks of memory with frequent access. The specific use method is described as follows:First look at the definition of Native.java:and see how native.c is implemented:As can be seen from the above code, i