Java can run jar files from the command line like this:
java -jar foobar.jar
However, if foobar.jar
depends on baz.jar
, the above will throw an exception as soon as any of the classes in baz.jar
is invoked, as the JVM has no way to know where to look for these.
However, the man page (OpenJDK 8 on Linux) states that:
When you use the
-jar
option, the specified JAR file is the source of all user classes, and other class path settings are ignored.
If repackaging is not an option, is there a way to run a jar file with dependencies from the command line?
The jar command is a general-purpose archiving and compression tool, based on the ZIP and ZLIB compression formats. Initially, the jar command was designed to package Java applets (not supported since JDK 11) or applications; however, beginning with JDK 9, users can use the jar command to create modular JARs.
When you use java -jar
, dependencies are not specified on the command line.
You have 2 ways to add jars to the class path:
Call java
with the main class and add jar files, including your foobar.jar
, on the command line:
java -cp foobar.jar:baz.jar com.mycompany.MainClass
Include dependencies in foobar.jar
's manifest file (and then run java -jar
)
Class-Path: baz.jar
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With