Create a so-called uberJAR file by merging the contents of the dependent JARs into your main JAR. While loading a class, if the Classloader cannot find the classs definition, it throws the NoClassDefFoundError. Instead, it calls upon the Java Classloader to load classes in memory as-and-when-required. You have two choices when making an executable JAR with dependencies. What Is When the Java Runtime runs a Java program, it does not load all the classes and dependencies at once. Why the libs aren't visible for the App? If I copy this dir manually to the CsvReplacer.jar file's location - everything works fine. The standard Java classloaders cannot find a JAR file embedded inside another JAR file. The manifest file contains: Manifest-Version: 1.0Ĭlass-Path: libs\yamlbeans-1.0.jar libs\opencsv-3.8.jar The libraries are included inside the jar file (they are there after unpacking it) - they are added to Libraries section in Project Structure (separately - one file per one lib), the whole libs dir is included in the Dependencies tab of Modules section (with export checkbox checked) and the libs dir is added in Output Layout of Artifacts section similarily. When I try to run it by java -jar CsvReplacer.jar command After building artifact jar file in the default out\artifacts directory, I get : net/sourceforge/yamlbeans/YamlException
The structure of my first app is simple: libsĮverything is fine during the compile and running the program.
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