Java

JUnit is currently the most popular test framework, it allows developers to easily write test units, so that they can "rest assured" to develop. But now a lot of applications are based on Java, the code is in the server-side container running, this

The JVM executes objects that are very familiar with class files, we are also known as class files, and the JVM specification defines this compiled code file (although not the actual file as mandatory) is very detailed, but we only talk about some

The question is presented as follows: Suppose that there are some forms in our HTML page that need to be processed, and we need to initialize the fields in the database, what should we do? The standard solution is to use CGI scripts or server-side

Most of the recommendations for using exceptions in the Java language suggest that check-type exceptions should be used preferentially in any case where the exception is believed to be captured. Language design (the compiler forces you to list all

Security is important for an enterprise environment. In the Java EE 5/glassfish environment, you can implement security in the following ways: Transport Layer Security (TLS)/Secure Sockets Layer (SSL) technology Authentication (authentication) and

The basic data (primitive) type of automatic boxing (autoboxing), unboxing (unboxing) is the function that is provided from J2SE 5.0. While it is convenient for you to pack the basic data types, it is convenient to show that the details are hidden,

The world knows that Linux operating systems are often a hodgepodge of software development packages, so our dear Red Flag Linux has integrated the Java development environment for us? This problem, we need to find the answer. I used the method is

13.2.5 Network protocol For programmers who need to engage in network programming, a network protocol is a concept that requires deep understanding. So what is a network protocol? Network protocol is the provision of data format for transmission

If you have a list of Integer objects, and you want to use Coolections.sort to sort them. Also, you have to specify a comparer for yourself, because you want to arrange them in descending order rather than ascending order. Here are some code

Java as a network programming language, in the browser that can be animated demo, you can play sound. In the process of human-machine interaction, in order to enhance the effect or play a role in prompting, need to join the sound. The Java package

When the client program needs to communicate with the server program, the client creates a socket object on the client computer, and the socket class has several constructors. Two commonly used constructors are sockets (inetaddress addr, int port)

When a relational database tries to store terabytes of data in a single table, total performance is often reduced. Obviously, indexing all the data is time-consuming not only for reading but also for writing. Because NoSQL data stores are especially

Before I begin, I would like to make some necessary description of the topic to be discussed in this article and the starting knowledge that the reader needs to have. The topic of this article is to discuss SOAP technology, and we'll make it as easy

This paper describes the application of the Java programming language to write a network communication program based on the client/server model, and discusses the socket mechanism, input and output stream, and program implementation code. Keywords

Brief introduction Java is a powerful object-oriented development language that supports many functions, such as C/s communication via socket programming, windows-based programming, console based programming, database connectivity, image and sound

Introduction to HTTP protocol Hypertext Transfer Protocol (HTTP) is located in the TCP/IP protocol application layer, is the most well-known protocol, but also one of the most core protocols in the interconnection network, the same, HTTP is based

In this article, I would like to answer the following questions: . Where are the memory settings and adjustments for Grails1.1 and Groovy1.6 Java virtual machines and how do we change them? What is the difference between the latest version and the

Now that we understand synchronization, we can then look at the Java Beans from another perspective. Whenever you create a bean, you must assume that it will run in a multithreaded environment. This means that: (1) All public methods of the bean

list boxes and combo boxes work in swing just as they do in old AWT, but they are also added if we need it. In addition, it is also more convenient and easy to use. For example, JList has a builder that displays a string array (oddly, the same

When to use multithreaded technology and when to avoid it, this is an important topic we need to master. The main purpose of the arm is to manage a large number of tasks in an orderly manner. By mixing multiple tasks, you can use your computer