Run the jar tool without arguments to see its usage. You pass it the -M option to create a JAR without a manifest. You won't be able to run the JAR file with java -jar, but you will still be able ...

Java Archive apps. Each installation of the Java Development Kit (JDK) includes a JAR utility (named jar.sh on Unix and jar.exe on Windows) that provides a variety of helpful functions for working ...

A pre-Java 9 JDK only observes the content root’s class files; it doesn’t see the Java 9-specific A.class and B.class files. In contrast, a Java 9 JDK sees first the version 9 A.class and B ...