diff --git a/modules/_home/default.nix b/modules/_home/default.nix
index 949cd83..f516112 100644
--- a/modules/_home/default.nix
+++ b/modules/_home/default.nix
@@ -1,6 +1,7 @@
 { inputs, pkgs, ... }:
 let
-  claude-code = inputs.claude-code.packages.${pkgs.system}.default;
+  claude-code    = inputs.claude-code.packages.${pkgs.system}.default;
+  pkgs-unstable  = inputs.nixpkgs-unstable.legacyPackages.${pkgs.system};
 in {
   home.packages = with pkgs; [
     firefox
@@ -9,6 +10,15 @@ in {
     mpv
   ];
 
+  # Symlinks in ~/.jdks/ - path scanned by IntelliJ on Linux by default
+  # After rebuild: File > Project Structure > SDKs > Detect SDKs
+  home.file = {
+    ".jdks/jdk-8".source  = "${pkgs-unstable.openjdk8}/lib/openjdk";
+    ".jdks/jdk-11".source = "${pkgs-unstable.openjdk11}/lib/openjdk";
+    ".jdks/jdk-17".source = "${pkgs-unstable.openjdk17}/lib/openjdk";
+    ".jdks/jdk-21".source = "${pkgs-unstable.openjdk21}/lib/openjdk";
+  };
+
   home.sessionVariables = {
     TERMINAL = "kitty";
     XDG_TERMINAL_EMULATOR = "kitty";
diff --git a/modules/core.nix b/modules/core.nix
index b4829c0..b812945 100644
--- a/modules/core.nix
+++ b/modules/core.nix
@@ -37,6 +37,7 @@
       unrar
       p7zip
       nvd
+      obsidian
     ]; 
 
     networking.networkmanager.enable = true;
diff --git a/modules/dev.nix b/modules/dev.nix
index 1a16892..c412c58 100644
--- a/modules/dev.nix
+++ b/modules/dev.nix
@@ -19,7 +19,7 @@ in {
       tracy
 
       # Infrastructure
-      # docker-compose
+      docker-compose
 
       # IDE
       jetbrains.idea-oss
@@ -47,11 +47,18 @@ in {
       tailwindcss-language-server
       qt6Packages.qtdeclarative
       wgsl-analyzer
+
+      # Java
+      openjdk8
+      openjdk11
+      openjdk17
+      openjdk21
+      maven
     ];
 
     programs.java = {
       enable = true;
-      package = pkgs-unstable.jdk17;
+      package = pkgs-unstable.openjdk17;
     };
 
     virtualisation.docker.enable = true;