java coding best practices

The safest way to add a new atomic operation is to modify the original class to support the desired operation. However, you may not have access to the source code or the freedom to modify it, so it is usually impossible. Even if you can modify the original class, you also need to understand its implementation of the synchronization strategy, in order to maintain the original design of the premise to improve its functionality. Adding a new method directly to a class means that all code that imple

Java concurrent programming Summary 5 -- ThreadPoolExecutor, java concurrent programming practices I. Introduction to ThreadPoolExecutor In jdk1.8, there are four constructors. To ThreadPoolExecutor (int corePoolSize, int maximumPoolSize, long keepAliveTime, TimeUnit unit, BlockingQueue 1,CorePoolSize: Core thread pool size 2,MaximumPoolSize: Maximum thread pool

10 Best Practices for exception handling in Java Best practices for exception handling in Java programming Here are 10 Best Practices for exception handling in 10 Java programming I have collected. In

For programming languages, a good coding style can not only generate effective framework encoding at the beginning of programming, but also make our coding clearer and more standardized. However, as mentioned by the author in this article, although the coding style of some Java programs is widely used, it will have a n

Deep understanding of Java Virtual Machine: JVM advanced features and best practices (in-depth analysis of JVM Based on issues such as memory management and high concurrency) Provides a comprehensive and in-depth analysis of JVM based on core content such as memory management, execution subsystem, programming compilation and optimization, and efficient concurrency. This deeply reveals the working principle

directly to the client, and if the program specifies the encoding format for the output, it is exported to the browser in the specified encoding format, otherwise the default iso-8859-1 encoding format is used. The process flow chart is as follows: 3. The database sectionWe know that Java programs are connected to the database through the JDBC driver, and the JDBC driver defaults to the ISO-8859-1 encoding format, which means that when we pass dat

In practice, exception handling is not just as simple as knowing the syntax. Writing robust code is more like an art. In this article, we will discuss Java Exception Handling best practices. These Java best practices follow the standard JDK library and several open-source code for handling errors and exceptions. This i

This article Importnew-dug pit master Zhang without permission, prohibit reprint!Exception handling plays a very important role in writing robust Java applications. Exception handling is not a functional requirement, it requires graceful handling of any error conditions, such as resource availability, illegal input, null input, and so on. Java provides a number of exception handling features, implemented th

I often encounter java coding problems at work. Due to lack of research, I cannot give a definite answer. I checked some information online this weekend and made a summary here. Question 1: What encoding should I use to read files in java? Java can read files in two types: byte and character. Byte reading uses InputStr

characters to the database, JDBC first converts the data in the Unicode encoding format inside the program to the ISO-8859-1 format, and then passes it to the database, when the database saves the data, it is saved by ISO-8859-1 by default, so this is why the Chinese data we often read in the database is garbled. 3. Several principles that must be clarified when analyzing common Java Chinese problems First of all, after detailed analysis above, w

form of synchronization that contains only the visibility, the volatile keyword, and in some cases we only need to focus on the visibility of the code, rather than the mutex, when using synchronizedIt does not seem necessary that we should consider using volatile, a volatile tagged property, when the thread accesses him without reading the cached variable's data, but instead reads it from main memory. It is also worth noting that the use of volatileWhen modifying a double and a long type, you s

line of code requires line wrapping . The 8.Java code has a single line limit length of 100 characters . Lines that exceed this limit must be wrapped except for the following conditions. Set "line wrapping" to modify the value of the "Maximum line width" below it. 9. When the line breaks, after the first row, we call the continuation line. Each continuation row indents at least four characters based on the first row. indents can be greater than

Often encountered in the work of Java coding problems, due to lack of research, always can not give the exact answer, this weekend on the Internet to check some information, here to do some summary.Question one: What encoding should I use to read a file in Java?The way Java reads files can be divided into two categorie

Java coding comprehension keywords: Java coding, Unicode, getbytes () come from my notes: youdao note-Java coding understanding the coding involved in various programs is nothing more t

100 times the latter, but it does use the same number of digits in the binary. Can do better, the method is variable length coding, the guiding principle is high frequency with a shorter number of digits encoded, low frequency with a longer digit code. Huffman coding algorithm is to deal with such problems. Huffman coded Java implementation The main data struc

1. Overview This article mainly includes the following aspects: Basic coding knowledge, Java, system software, URL, tool software, etc. In the following description, the word "Chinese" is used as an example. We can see that its gb2312 encoding is"D6d0 cec4", Unicode encoding is"4e2d 6587", UTF Encoding is"E4b8ad e69687". Note that the two words do not have iso8859-1 encoding, but they can be represented by

1. Overview This article mainly includes the following aspects: Basic coding knowledge, Java, system software, URL, tool software, etc. In the following description, we will take the word "Chinese" as an example. We can see that its gb2312 encoding is "d6d0 cec4" and Its unicode encoding is "4e2d 6587 ", the UTF code is "e4b8ad e69687 ". Note that the two words do not have iso8859-1 encoding, but they can b

Reference fromHttp://www.cnblogs.com/tianzhijiexian/p/3906774.htmlHttps://github.com/tianzhijiexian/HttpAnnotation/blob/master/lib/src/main/java/kale/net/http/util/HttpReqAdapter.javaOriginal webpage address: http://www.codeceo.com/article/java-reflector.html ...Summary: The simplest and most elegant use of reflection.Examples of this article can be seen in the sample code and downloaded, if you like star,

1.1 objectives and requirements Why coding standards? Coding standards are especially important for programmers for the following reasons: -80% of the cost for a software life cycle is maintenance. -Almost no software is maintained by the original developer throughout its lifecycle. -Coding specifications can improve the readability of software and allow programm

Coding specifications are important for developers, for several reasons:1. In the life cycle of a software, 80% of the cost is maintained2. Virtually no software, throughout its lifecycle, is maintained by the initial developer3. The coding specification can improve the readability of the software, allowing programmers to understand the new code as quickly and thoroughly as possible.4. If you publish the so