Add java files

flake.nix

@@ -0,0 +1,24 @@
+{
+  description = "Portfolio hugo configuration";
+
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = { self, nixpkgs, flake-utils }:
+    flake-utils.lib.eachSystem flake-utils.lib.allSystems (system:
+      let
+        pkgs = import nixpkgs { inherit system; };
+      in
+      {
+        devShells = {
+          default = pkgs.mkShell {
+            packages = with pkgs; [
+              jdk23 # When available
+              maven
+            ];
+          };
+        };
+      });
+}