Run Class inside jar file

java -classpath <jar_file.jar> <class_in_jar_with_absolute_path>

Example:

t4acke4.jar Contents

com.example.XYZ1.class
com.example.XYZ2.class

com.example.test.PQR1.class
com.example.test.PQR2.class
com.example.test.PQR3.class

NOTE: Here com,example and test are folders or packages

Run PQR2 as:

java -classpath t4acke4.jar com.example.test.PQR2