Morphex's blogologue (Life, technology, music, politics, business, mental health and more)

This is the blog of Morten W. Petersen, aka. morphex in various places. I blog about my life, and what I find interesting and/or important. This is a personal blog without any editor or a lot of oversight so treat it as such. :)

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A Java-based tool to export tweets from Twitter for safe keeping

So, I was looking into exporting all my tweets the other day, to keep a copy just in case something happened to my Twitter account.

I tried exporting from Twitter (using a desktop browser as they asked on the export page), but I have so far not seen a dump of all my tweets.

I see there are other tools available for exporting Tweets, websites, but I thought to myself, why not create a simple, safe tool for exporting and safe-keeping Tweets.

So, after a bit of rummaging I found twitter4j, and started to build a Twitter export client using a text editor, a Makefile and javac/java.

However, I quickly ran into a NoClassDefFoundError, and after googling a bit, I felt an obscure-configuration-detail-headache coming on, and decided I could try to use Maven, which is mentioned on the Twitter4j website for the build process.

The Maven quickstart guide instructed me to use this command to generate a Maven project:

mvn archetype:generate -DartifactId=twitter-exporter -DarchetypeArtifactId=maven-archetype-quickstart -DinteractiveMode=false

And after downloading some components etc. - Maven had a file hierarchy for me.

I then added the following section to pom.xml


To include the twitter4j components in the Maven project. I then preceeded to run "mvn package" and then entered the target directory, and with the command

java -cp ./twitter-exporter-1.0-SNAPSHOT.jar

I got the result

Hello World!

Which is what one can expect, as the project was just generated. Afterwards I created a new repository on GitHub, and uploaded the project (output of "history|grep git" in bash):

 2172  git init
 2173  git add pom.xml src
 2175  git config --global ""
 2176  git config --global "Morten W. Petersen"
 2177  git commit
 2182  git remote add origin
 2183  git push -u origin master
 2184  history|grep git

I started with this before I decided to blog about it, so I guess to setup the enviroment you have to run "sudo apt install maven openjdk-8-jdk openjdk-8-jre git" on Ubuntu/Debian.

The source code website for the project is here:

[Update same day: I had to download the twitter4j jar and add it to the java command above: "java -cp ./twitter-exporter-1.0-SNAPSHOT.jar:./twitter4j-core-4.0.4.jar"]

[Update later same day: twitter4j-core-4.0.4.jar can be downloaded from]

[And update even later same day: twitter4j-core-4.0.6.jar can be downloaded from - it's necessary for the latest code to run]

[Permalink] [By morphex] [Java (Atom feed)] [30 Mar 15:19 Europe/Oslo]