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Why is it important to know this? Knowing the purest way to boot Java enables you to analyze how many directories to boot, how to name the execution, what the parameters are, whether there are any missing files, etc., in case of startup problems. The first step in learning Java is to teach you how to execute Java programs from the command line, but many people forget this once they have learned Java and used the IDE. This is one of the most basic Java developers need to master. How does the underlying IDE execute Java programs? Many people don’t. This might seem simple, but who wouldn’t run a Java program? But most of the time, we just execute Java programs through the IDE.
#Java simple writer update
In the JVM categories, I think need to master the knowledge are: the JVM memory model and structure of GC principle, performance tuning tuning: the Thread Dump, and analyses the memory structure binary bytecode class structure, the class loader system, the class loading process, the instance creation process method performs various large Java version update provides new features (need to know simple) Of course the JVM is not the only interview question that determines technical competence, but it is a testament to Java development competence. When I interview developers with more than 3 years of Java experience, the JVM is almost a must-ask. With the JVM as the basis for Java running, it’s hard to believe that people who don’t know anything about the JVM can eat the Java language thoroughly. But for a veteran developer with more than 3 years of Java experience, not having a JVM is almost unacceptable. JVM correlation (including features of each version)įor those new to Java, the JVM-related knowledge is not necessarily deep, but some simple knowledge of the concepts. After so many years of Java development, and combined with the usual interview Java developers some of the experience, I think for J2SE is mainly to grasp the following content.ġ. This introduction will focus on the j2SE-related parts, and will cover more j2EE-related and Java frameworks in the future. The purpose of writing this article is to summarize some of your years using Java experience, mainly and some Java basic knowledge related, so also hope to be able to share to the beginner, Java programmers and going to the Java development in the beginners, hope can give you some experience, can make everyone better learning and using Java.