Method and system for checking the consistency of application JAR files

A computer method providing consistency of JAVA application files, comprising:

• in a processor:
• automatically intercepting a class that is loaded into a subject JAVA application, the class having a respective JAVA Archive (JAR) file, said automatic intercepting identifying the respective JAR file and copies of the respective JAR file to check;
• computing cyclic redundancy check of the identified respective JAR file resulting in a computed CRC value of the respective JAR file;
• comparing the computed CRC value to a CRC value of at least one other copy of the respective JAR file;
• 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 file are determined to be inconsistent, such that the method dynamically ensures consistency of the subject JAVA application file,
• wherein the determining consistency includes exact sameness of the multiple copies of the respective JAR file, such that the multiple copies of the respective JAR file correspond to a same version.