How do I check if a class is in included in the manifest classpath?

Question

I have some jars being referenced by classpath JVM arg (-cp) and other referenced by a pathing jar that includes additional jars via a Manifest file.

At runtime, how can I check the presence of a class that scans the -cp jars as well as those referenced by the pathing jar? This is required for some initialization task that scans classes for a particular annotation.

The same way you would check for any class in the classpath: `Class.forName("com.example.SomeClassOfInterest")`. — VGR, Apr 06 '18 at 22:03

score 2 · Accepted Answer · answered Apr 08 '18 at 04:02

2

try {
    Class.forName("com.some.Class");
}
catch (ClassNotFoundException e) {
    // Specified class not found
}

Note, from the Class.forName documentation:

A call to forName("X") causes the class named X to be initialized.

answered Apr 08 '18 at 04:02

Justin Albano

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How do I check if a class is in included in the manifest classpath?

1 Answers1