Detects version conflicts between a target Java Archive (JAR) file and currently installed extension JAR files.
extcheck [options] targetfile.jar
The target JAR file against which the currently installed extension JAR files are compared to detect version conflicts.
Lists JAR files in the extension directory as they are checked. Additionally, manifest attributes of the target JAR file and any conflicting JAR files are also reported.
Passes option to the Java Virtual Machine (JVM), where option is one of the options described on the reference page for the Java launcher. For example, -J-Xms48m
sets the startup memory to 48 MB. See java
(1).