You can get some tricks of collection traversal through this article. There are two ways for Java to traverse collections. One is the most basic for-loop, and the other is the for-each introduced by jdk5. With this method, we can traverse arrays and collections more conveniently. But have you ever…

Do you know these excellent Java libraries? One of the characteristics of an experienced Java developer is that he is good at using existing wheels to build cars instead of building wheels repeatedly. Today’s Java ecosystem has developed very maturely. In the decades of Java's rapid development, many excellent open…

Once you use these plugins, you can’t live without them. I believe many Java programmers use IntelliJ Idea to write code like me, idea provides rich and powerful functions, such as automatic code completion, editing and navigation, powerful search functions, and so on. Working with IntelliJ Idea gives you a…

By asking these questions, you can better understand the company and improve your chances of hiring you. As a software engineer, I believe everyone has experienced many job interviews. Everyone has also summed up a lot of experience in their respective professional fields. When you ask questions related to professional…

Now there are so many Java logging frameworks. What is the relationship between them and how should we use them? Logging is too familiar to Java developers, but I believe many people have such doubts. There are several logging frameworks in Java, such as Log4j, Logback, JCL, and slf4j. What…

I have upgraded and am using java17. What are you waiting for? Every new version of Java, especially the update of the LTS version, will provide many new features and functions to fix the remaining bugs and improve performance. But so far, although java17 has been released for some time…

Actually, concurrent programming is not so complex. We all know that multithreading can be used to improve system performance for performing complex tasks. But the cost of using multithreading is always to consider thread safety. Because the triggering of thread safety problems in multithreading is always irregular. Many people, especially…

Have you ever encountered these weird problems？ As a java development programmer, I don’t know if you have encountered some incredible bugs. These bugs often take you several hours to troubleshoot. When you find them, you may silently scold yourself as a fool. Yes, these ridiculous bugs are basically caused…

When you encounter the problem of spring transaction failure, just read this article. As a Java Software Engineer, I believe everyone is familiar with spring transaction. However, many junior engineers may only have a simple understanding of spring transactions. If we want to grow into senior java development engineers, whether…