java coding practice

Java Chinese garbled solution (4) ----- java coding conversion process, java ----- java The first three blogs focus on character encoding. Through these three blogs, you will have a preliminary understanding of various character encoding methods, to understand the Chinese la

Java beginner course video practice-Beginner online, quiz game, ATM practice, welcome to watch, atm practice Java introductory course video practice-elementary The upload is complete. Welcome to the audience Go directly: Htt

Java Chinese garbled solution (6) ----- coding and decoding in java Web, java ----- javaWeb In the previous blog, LZ introduced the java encoding and decoding operations in the previous two scenarios (IO and memory, in fact, in these two scenarios, we only need to set the co

multi-threading best practice, but it's double edge sword at same time. Lock interface is powerful but every power comes with responsibility. Different locks for Read and write operation allows to build scalable data structures like Concurrenthashmap, but it also Require lot of care during coding. Unlike synchronized keyword, thread doesn ' t release lock automatically. You need to call unlock () method to

Article 3: JAVA character encoding Series 3: coding problems in Java applications this part adopts the reuse mechanism and references an article to complete this part. Source: Eceel Research -- character set encoding address: http://china.eceel.com/article/study_for_character_encoding_java.htm 1. Overview This article mainly includes the following aspects: Basic

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

By using some assistive tools to find bottlenecks in the program, you can then optimize the code in the Bottleneck section. There are generally two scenarios: optimizing code or changing design methods. We generally choose the latter because it is better to improve the performance of the program than to call some optimized code without calling the following code. A well-designed program can streamline the code and improve performance.Here are some of the methods and techniques that are often use

Java course practice log (Thursday) and java practice log Import java. awt. eventQueue; import javax. imageio. imageIO; import javax. swing. JFrame; import javax. swing. JPanel; import javax. swing. border. emptyBorder; import javax. swing. abstractButton; import javax. swin

[JAVA concurrent programming practice] 3. Synchronization container and java practice The synchronization containers include Vector and Hashtable, and some are created by factory methods such as Collections. synchronizedXxx. 1. Synchronization container Problems Synchronization containers are thread-safe, but sometim

[JAVA concurrent programming practice] 10. concurrent program testing and java practice1. Generate a random number Package cn. study. concurrency. ch12; public class Util {public static int xorShift (int y) {// shift left and unsigned right, and last XOR operation (XOR, if the two bits are different, the value is 1; otherwise, the value is 0) y ^ = (y 2. cache

system's file.encoding parameter (it is the operating system default encoding format, such as Win2K, which has a value of GBK), then the JDK translates our Java source program into memory from the file.encoding encoded format into the Java internal default Unicode format. And then Javac compiles the converted Unicode file into a. class file, at which point the. class file is Unicode encoded, it is temporar

1. Naming rules1.1 package naming rules [Java-1]The package name should be written in small form and separated by "." In the middle [required] Description · reason Unless otherwise specified, make sure that the package name is written in small form. This is a general Java rule. Example Package CN. co. AAA. BBB; // ErrorPackage CN. co. AAA. BBB; // correct [

[JAVA concurrent programming practice] 8. Lock sequence deadlock and java practice Package cn. study. concurrency. ch10; public class Account {private String staffAccount; // Account private String passWord; // passWord private int balance; // Account balance public Account (int money) {this. balance = money;} public S

[JAVA concurrent programming practice] 11. Implementation of bounded cache and java practice1. bounded cache base class Package cn. xf. cp. ch14;/*** function: bounded cache implementation base class * Time: 2:20:00 * file: BaseBoundedBuffer. java * @ author Administrator ** @ param 2. Determine the prerequisites befo

Java file encoding tool and java coding Tool This article mainly introduces a tool class written in java to convert a file encoding to another encoding that does not change the file content: You can use URLEncoding to re-encode and decode the source file. 　　　　　 　　　　 1 public class ChangeFileEncoding {2 public static in

[JAVA concurrent programming practice] 9. Lock segmentation and java practice Package cn. study. concurrency. ch11;/*** lock segmentation * @ author xiaof **/public class StripedMap {// synchronization policy: locks the array in segments, n nodes use the n % LOCKS lock to protect private static final int N_LOCKS = 16;

circumstances to 8 screen around to display. This makes it difficult to read a program or modify a program. It is therefore advisable to extract the block that completes the comparison of independent functions as a single function. A block that accomplishes the same or similar function is extracted independently of a sub-function. It can be found that the simpler the upper-level function is, the more specific work is done by invoking a few sub-functions, the more the underlying function complet

By using some auxiliary tools to find bottlenecks in your program, you can optimize the code for the Bottleneck section. There are generally two scenarios: optimizing the code or changing the design method. We typically choose the latter because not calling the following code can improve program performance better than calling some optimized code. A well-designed program can streamline code to improve performance. Some of the methods and techniques used in