This is a post by BartB at brodzinski.net that explains how to install latest Java 8 on raspbian.
Tuesday, June 4, 2019
This is an extract from StackExchange that shows how to install ppp package in Raspberry Pi.
This package is missing dependencies. You need to make sure you update your packages and preferably use a package manager that handles dependencies better. Try this:
pi@raspberrypi:~$ sudo su - root@raspberrypi:~# apt-get update && apt-get install aptitude root@raspberrypi:~# aptitude upgrade && dpkg --configure -a && aptitude install ppp