Method and system for checking the consistency of application jar files

A computer program product ensuring consistency of Java application files, the computer program product comprising:

• a computer readable non-transitory storage medium having computer readable program code embodied therewith,
• the computer readable program code comprising computer readable program code configured to:
• automatically intercept a class that is loaded into a subject Java application, the class having a respective Java Archive (JAR) file;
• retrieve the respective JAR file;
• compute cyclic redundancy check (CRC) of the retrieved respective JAR file resulting in a computed CRC value of the respective JAR file;
• if the respective JAR file has been previously encountered by the subject Java application, automatically compare the computed CRC value to a CRC value of at least one other copy of the respective JAR file, wherein the at least one other copy of the respective JAR file is used by the subject Java application;
• and
• based on results of the comparing, determining consistency of multiple copies of the respective JAR file used by the subject Java application and alerting a user when the multiple copies of the respective JAR files are determined to be inconsistent, such that consistency of the subject Java application files is dynamically ensured.