Set the NUM_FILES variable in the BUILD file to the desired input size.

To generate the test files, build the genbinary library using the genrule:

bazel build //java/com/engflow/binaryinput:genbinary{1..<NUM_FILES>}

Then, the program can be built with the following command:

bazel build //java/com/engflow/binaryinput:main

1. Generation of Java Binaries:

   • The genrule in the BUILD file generates a specified number of Java classes (Hello1.java, Hello2.java, ..., HelloN.java).
   • Each generated class contains a greetNum method that prints a unique message.
   • A java library is created for each file (Hello1.jar, Hello2.jar, ..., HelloN.jar).

2. Building the main target:

   • The previously created libraries are added to the main class as dependencies through a for loop.
   • The consistent naming scheme of the libraries simplifies their inclusion in the build process.

3. Main Class Execution:

   • The Main.java file in binaryinput dynamically loads each generated class using reflection.
   • It then invokes the greetNum method of each class, printing the corresponding message.

The number of generated files is controlled by the NUM_FILES variable in the BUILD file of the binaryinput package. Modify this variable to change the number of generated classes and observe the performance impact on Engflow's remote execution and caching service.

To generate and run the program with 10 input binary files:

1. Set NUM_FILES to 10 in java/com/engflow/binaryinput/BUILD.
2. Build the genbinary library:

   bazel build //java/com/engflow/binaryinput:genbinary{1..10}

3. Build the main binary:

   bazel build //java/com/engflow/binaryinput:main

This will generate 10 Java classes, build the genbinary library, and build the main binary. Using bazel run will also print messages from each generated class.