library_management.java:80: error: invalid method declaration

[p4ramveer]

library_management.java:80: error: invalid method declaration; return type required
finaldsa()
^
library_management.java:80: error: ';' expected
finaldsa()

   There is a pull request that fixes the issue but afterwards I am getting following error
   
   
    Error: Could not find or load main class library_management.class

Caused by: java.lang.ClassNotFoundException: library_management.class