The `pack200` and `unpack200` tools, added in JDK 5.0, have been removed. The class `java.util.jar.Pack200` and the interfaces `java.util.jar.Pack200.Packer` and `java.util.jar.Pack200.Unpacker` have also been removed. These tools and API were deprecated for removal in Java SE 11 with the express intent to remove them in a future release. In addition, in the `jar` tool, the `n` sub-option to `jar c` has been removed. See [JEP 367: Remove the Pack200 Tools and API](https://openjdk.java.net/jeps/367) for more information.