问题
The documentation (https://docs.oracle.com/javase/9/tools/jlink.htm#JSWOR-GUID-CECAC52B-CFEE-46CB-8166-F17A8E9280E9) says:
Level 1 -> Constant String sharing
Level 2 -> zip
My questions are:
1). Which strings get shared ?
2). Who share these strings ?
3). Compression in Level 2 does not create a zip file. Then how it is a zip compression ?
来源：https://stackoverflow.com/questions/48180953/what-are-the-algorithms-behind-the-level-1-and-level-2-compression-using-jlink