How to concisely replace Ant with a script?

Question

Java

Ant (build.xml) starts building the project with Maven, it is necessary to exclude Ant from this process, the task of the script is:
1 to download the code;
2 assemble the main project;
3 collect all artifacts in one directory and display them in local dir.
On the hub, in addition to the hypothetical reasoning of "narrow-minded philologists", there is no manual in human language from Dante, who survived these circles, I also ask you to do without links to the Apache site.

Answer 1

is there any significant difference between replacing with maven or bash