How can I set the compression level to 2, 4, 6 or 8

[jptx1234]

The CompressionLevel is an enum class. There are only levels 1, 3, 5, 7, and 9. How can I set the compression level to 2, 4, 6 or 8?

Thank you.

[srikanth-lingala]

This is unfortunately not possible at the moment. Do you need such fine grained compression levels? I can consider adding it to the enum, but just curious to know the use case you have.

[jptx1234]

This is unfortunately not possible at the moment. Do you need such fine grained compression levels? I can consider adding it to the enum, but just curious to know the use case you have.

We are developing a data backup program in our system. In previous versions, we use the original zip command to backup the data and users can set the compression level to 1-9. The size of the original data may range from a few M to several T, so changes in compression levels can have a large impact on the size of archived files.
It's too hard to get the current backup progress from the original zip command. So we switched to zip4j. Then this issue appeared.

Thank you for your help. I love zip4j.

[srikanth-lingala]

Thanks for the explanation. I will add this in the next release.

[srikanth-lingala]

Feature added in v2.8.0 released today.