Modern Java: Download and Upload Files from SFTP Servers from Java using the sshj library

In my first video on writing SFTP clients in Java I used a library called jsch. jsch does what it claims but it does feel a little bit dated. The Java library that I’m going to show today is called sshj (https://github.com/hierynomus/sshj) and it has a much more modern feel to it.

Advantages of using sshj over jsch:
- Supports "BEGIN OPENSSH PRIVATE KEY" style private keys out of the box
- Uses the Java collections framework e.g. java.util.List instead of java.util.Vector
- Updated more frequently

While not necessary, if you enjoyed this video, buying me a coffee is greatly appreciated!
https://www.buymeacoffee.com/prodprogrammers (no refunds)

00:00 Intro
00:30 Add Gradle dependency
02:05 Connecting to an SFTP Server
06:20 Specifying the public key algorithm to authenticate the host
08:20 Password based authentication
09:03 Key based authentication
10:32 Creating the SFTP client, listing the directory and changing the current directory
13:10 Downloading a file - to a file and to a buffer
15:27 Creating remote directories and uploading content - from a file and from an in memory buffer

IntelliJ Live Code Templates:
https://gist.github.com/productivity-for-programmers/5689014befeaa3c83680f408928f2f7a

SSHJ:
https://github.com/hierynomus/sshj

Icon Credits:
Sftp Flat Icon by Alexiuz AS
https://iconscout.com/icons/sftp
https://iconscout.com/contributors/WHCompare