Java

As a developer, our biggest challenge is to keep ourselves abreast of new technologies. Technology changes quickly, and you'll probably see a new version of the programming language and framework every two years. For 2017 years, AR, VR, block chain,

Zxing is a Google dedicated to the compilation, solution two-dimensional code, barcode, open source project, the use and operation are very convenient. Zxing does not support Java and supports other classes of applications such as Android, CPP, C #,

Http://hi.baidu.com/pannijingling/blog/item/28920202733bb7fe09fa936f.html (Java) gets all the file names of a specified type under a folder. and return the available names as appropriate Check if the specified directory on the disk already has a

A PMD document that examines the following sections of code: Unused local variables An empty catch block Parameter not used Empty if statement Duplicate import statement Unused private methods Could be a singletons class. Short/Long variable and

four-layer model of Java EE Java EE uses a multi-tier distributed Application model, where the application logic is divided into components by function, and each application component is distributed on different machines based on the layer they are

1. Download the source code through git Https://github.com/hyperledger/fabric-sdk-java 2. Extract and import into Eclipse Attention to environmental needs: Jdk1.8,eclipse try to use the latest version If you import, there is a bomb box error: Failed

installation and start-up of Activemq Install Java Configuration Java environment download ACTIVEMQUnzip the compressed packageTar zxvf activemq-x.x.x-bin.tar.gzAt this point, Linux under the ACTIVEMQ installation work is completed.ACTIVEMQ

Using proxy servers in Java ask for advice: http://www.linuxsir.org/bbs/archive/index.php/t-188774.html prefaceMany users may experience a situation like this: found a good resource on the site, but this resource is divided into a lot of files

An example of understanding Wait () and notify ()Here is a post I saw on the CSDN forum, which involved the understanding of the concepts of synchronization, Wait (), notify (), and I tried to dissect the two methods of Waiting () and notify ()

Directory (?) [+] Introduction to Huffman coding Huffman encoding is the binary encoding pairing of characters and characters, which is divided into encoding and decoding to compress the binary data length of characters. We know that character

10.3 Throwing an exception The concept of exception throwing has been mentioned in the previous section. If the exception thrown in the try block is not able to catch its catch block, or if the exception is caught but does not want to be processed

"Peng" last book said, the Java game map construction is an extremely simple thing, this book to connect the previous article, explore the role of the game in the mobile problem. As we all know, [role] is the soul of a game, there is no role in the

Source of information: Software talent net Author: bristling super2002 I wrote an article on the Java implementation of the mail sent, when I wrote the message to send the function is very simple, can not bring attachments, can not have template.

Recommended this way, because the encapsulation is better, when you need to export the table columns need to change, just need to change in the JS file, not like the action method needs to change the Java code in action. Each time you click the

1. The difference between the daemon and local threads in Java. There are two types of threads in Java: The daemon thread (Daemon) and the user thread. Any thread can be set as a daemon thread and a user thread, by method Thread.setdaemon (bool on)

In Java, since there is no operator overload, then what is its replacement implementation ... I'll help him answer. Satisfactory answer 2011-04-22 13:43 In fact, is the string operation of the + and + +. However, you cannot customize operator

network communication Mode There are two kinds of existing network communication methods: 1.TCP (Transmission Control Protocol) mode TCP is a connection-oriented reliability transport protocol, TCP is like a telephone, use this way to communicate,

There is a rush. NET project, consider the package of persistent layer query as far as possible object-oriented, looked at this article, think the author thought well, so want to take to the composition. NET version. Absrtact: In order to overcome

Recently asked why the string was designed to be immutable, then a little confused, the problem has always been like a bug, unexpectedly did not find, did not think, summed up in this.The 1.String is immutableThe string class is final decorated and

Six basic guidelines for JAVA design patterns to followa single principle of responsibility: (Responsibility pinciple)　A class is responsible for only one responsibility. When more than one responsibility is required, new classes need to be added to