In this chapter, we went through all of the steps required to prepare a computer for compiling code meant for an EV3 running LeJOS. We started by installing and testing the JDK, and in the process, we wrote perhaps our first Java program.
We then learned about Gradle, a build system for Java projects, and installed and tested it. The final piece was downloading the LeJOS source code and libraries required to compile the code.
The chapter ended with a simple but instructive program for printing the string Hello, World to the EV3 brick's LCD screen. Every line of code in both the Java and Gradle build files was explained, and we ended by executing our first LeJOS program on EV3 itself.
This chapter has equipped us with the skills necessary to properly structure a Java project that uses LeJOS and Gradle. We learned how to compile the project, transfer it to EV3, and execute it. The rest of the book takes a deeper look at programming using LeJOS and how to construct complex robots.
At this...