'How to make .jar file read database and serialised .txt file?
I'm trying to make an executable .jar file from a program that uses both an SQLite database and a serialized read/write file system for storage inside the program. We are able to make an executable .jar file, but it doesn't read from any database nor file system that we have written within the program. Does anybody know how to do this?
Solution 1:[1]
"To make a .jar file read from a database" when you have a Java or Kotlin (or Scala) program which does that you are almost done, you just have to compile it and which provides you a .jar file which does exactly that.
I think your question is what does it take to write a program that does it. For that you have to think about what your database should be able to handle.
Read from filesystem
A text file on a disc is very rudimentary but might suffice if the application is just to read/write some persisted state. For that the Java API has all you need, take a look at Baeldung - read from file via NIO.
Read from database
If you need transactions or support for multiple applications working with the persisted storage, a database would be the more sensible thing to use.
Although the Java API again provides you everything you need for that (e.g.Processing SQL Statements with JDBC) you would need to reinvent the wheel in a sense. The easier thing would be to rely on an OR-mapper like Hibernate or JOOQ.
For writing enterprise Java software you could overengineer it with Spring-Boot JPA.
Sources
This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.
Source: Stack Overflow
| Solution | Source |
|---|---|
| Solution 1 | Valerij Dobler |