Getting started

You will need:

• The Time Travel Debug for Java plugin installed into IntelliJ IDEA.

• The Undo for Java Recording and Replay tools.

• Your application or test case running under an OpenJDK or Oracle JVM on a supported Linux distribution.

Installing the Time Travel Debug for Java plugin

In IntelliJ IDEA Settings (Ctrl-Alt-S, or ⌘, on macOS) › Plugins › Marketplace, search for LiveRecorder, press Install and restart IntelliJ IDEA.

Under Settings › Tools › LiveRecorder › License Key, paste your license key. If you don’t have a licensed copy of Undo for Java, you can obtain a free trial.

Recording and Replay tools

The Recording and Replay tools are supplied as LR4J-Record-*.zip. Unzip the archive and set LR4J_HOME to the lr4j directory it creates:

export LR4J_HOME=/path/to/lr4j

Refer to Recording an application and Live Debugging for how to use these tools.

The archive includes demo programs in $LR4J_HOME/demos/java/ that you can record and debug to get familiar with the tools. See the Python API example for a worked example using these demos.