1. Compilation Error: java.nio.file.NoSuchFileException When compiling a Jenkins plugin, the following error is reported: 1 2 3 4 mvn package Compilation failure [ERROR] java.nio.file.NoSuchFileException: /root/java/target/classes/META-INF/annotations/hudson.Extension It turns out that Maven uses JAVA_HOME rather than PATH, so it cannot find a Java runtime. Java 11 does not work either — only Java 1.

Using Jenkins always means dealing with all kinds of plugins. To practice DevOps better, we should also be capable of developing plugins ourselves, so the whole process can converge inside Jenkins. 1. Jenkins Plugins 1.1 The Plugin Ecosystem Jenkins’ predecessor Hudson started in 2004, and 16 years on it is still a mainstream CI/CD engine.

First, the compiler needs to compile .java text files into .class bytecode, and then the JVM executes the .class bytecode files. The process is not complicated; this article mainly records some of the related steps during compilation and runtime. 1. A Single Source File Create a text file Hello.java 1