Java S3 Backup & Integrity Tool

Java CLI tool that backs up a local directory to a private Amazon S3 bucket and generates a SHA-256 integrity manifest for auditability.

Features

• Uploads local files to S3 with configurable key prefixes
• Computes SHA-256 hashes and records metadata in a JSON manifest
• Supports dry-run mode to preview actions without uploading

Tech Stack

• Java
• AWS S3
• AWS CLI
• SHA-256 hashing

Usage

Compile:

javac -d out src/Main.java