Which version of Java should I use and how do I configure it?

Preferred Java Versions

Maltego runs on Java 8, Java 11 and Java 17.

Maltego supports Java LTS (Long Term Support) versions - currently Java 8, Java 11 and Java 17.

How to use Maltego's Java Config UI

Opening the UI

On Windows:

You can find the Java Config UI for Maltego by searching "configure" in your Start Menu and clicking on the application with the Maltego icon.

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On Mac:

The jar file needed to run the Config UI should be located in the following location:

/Applications/Maltego.app/Contents/Resources/Maltego/maltego-ui/modules/ext/Java_Config_App.jar

Running the following command in your terminal, should launch the configure app:

java -jar /Applications/Maltego.app/Contents/Resources/Maltego/maltego-ui/modules/ext/Java_Config_App.jar

On Linux:

In the Start Menu, search "Maltego Memory Config"

or run Maltego_memory_config in terminal

/usr/bin/maltego_memory_config

Selecting your Java installation

Once your have opened the configure UI, you can use the "Path" dropdown to select the Java installation to use when running Maltego.

Editing the Java Config file

If you would prefer to edit the config file rather than using the UI, you can edit the following text file:

Windows:

Version 4.3.X and above:

C:\Users\<username>\AppData\Roaming\maltego\v<maltego_version>\etc\maltego.conf

Maltego 4.2.19 and below:

C:\Users\<username>\AppData\Roaming\.maltego\v<maltego_version>\etc\maltego.conf

On Mac:

Applications/Maltego.app/Contents/Resources/Maltego/etc/Maltego.conf

On Linux:

/home/< username >/.maltego/< maltego_version >/etc/maltego.conf

Add/change the variable "jdkhome" in maltego.conf to point to the path of your Java installation.

jdkhome="C:\Program Files\Java\jre1.8.0_171"