Build tools are programs that automate the creation of executable applications from source
code. Building incorporates compiling, linking and packaging the code into a usable or
In small projects, developers will often manually invoke the build process. This is not
practical for larger projects.
Where it is very hard to keep track of what needs to be built, in what sequence and what
dependencies there are in the building process. Using an automation tool like Maven,
Gradle or ANT allows the build process to be more consistent.