Manual creation of classes.jsa

This shared archive file can also be created manually using the following runtime command (you should have enough permissions to write to the target directory):

    java -Xshare:dump 

Here's a sample output of the preceding command:

As you can see from the output messages in the preceding screenshot, this command performs a lot of operations—it loads classes, links them, counts the classes that are included in the shared archive, allocates read-write and read-only objects, and a lot more.

If the file already exists, the preceding command simply overrides the existing file.