Cooja is an open source network simulator.
MSPSim is a Java-based instruction level emulator of the MSP430 series microprocessor and emulation of some sensor networking platforms. It is used by Cooja to emulate MSP430 based platforms and is part of the Cooja source code.
To build Cooja, you can run ./gradlew build. Cooja is then provided in build/libs/cooja.jar as a JAR file. The dependencies are located in build/libs/lib.
To build Cooja easily executable and with all dependencies, you can use the following command:
./gradlew distTar
or
./gradlew distZip
This command creates a compressed folder in build/distributions/ which contains both the JAR file and a platform-independent script for execution.