Which java class file will be called if same class is packed in two jar files?
<p>i am working on opensource project . As of of now i have dont any customization in any class. So using all the jars files provided by opensource project. My question is if i modify one java file ,compile it  and pack it new jar file with same folder structure , will there be any issue at start up of server or run time? If not which class file will be called(default file or my customize java class file) ?</p>
