Which command line runs the main class com.acme.Main from the module com.example?

Question

Options

• Ajava --module-path mods com.example/com.acme.Main
• Bjava --module-path mods com.acme.Main
• Cjava --module-path mods -m com.example/com.acme.Main
• Djava --module-path example.jar -m com.example/com.acme.Main

• A
  4% (1)
• B
  7% (2)
• C
  15% (4)
• D
  74% (20)

Explanation

Option D is correct because it combines two required elements: the -m flag (or --module) to specify the module, and the module/mainclass format (com.example/com.acme.Main), with the module packaged as example.jar on the module path.

• A is wrong because it omits the -m flag entirely - without it, Java treats com.example/com.acme.Main as a class name, which is invalid syntax.
• B is wrong for the same reason: no -m flag, and com.acme.Main without a module qualifier is just an unqualified class name, which won't resolve correctly in the module system.
• C has the correct syntax structure (-m com.example/com.acme.Main) but uses mods (a directory) as the module path instead of the actual JAR file example.jar - the module can't be found if the path doesn't point to where it lives.

Memory tip: Think of -m as "module mode" - you always need it when launching from the module system, and the argument always follows the pattern moduleName/fullyQualifiedMainClass. If you see a command with --module-path but no -m, it's broken.

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