Simple demo of registering a jdt command

vscode-extensions/vscode-spring-boot/lib/Main.ts

@@ -35,9 +35,18 @@ export function activate(context: VSCode.ExtensionContext) {
             },
             initializationOptions: {
                 workspaceFolders: workspace.workspaceFolders ? workspace.workspaceFolders.map(f => f.uri.toString()) : null
-            },
-
+            }
         }
     };
-    let clientPromise = commons.activate(options, context);
+    setTimeout(() => {
+        VSCode.commands.executeCommand("java.execute.workspaceCommand", "sts.java.resolveClasspath", "Brocoli", "Cabbage")
+        .then(
+            (commandResult) => VSCode.window.showInformationMessage(""+commandResult),
+            (e) => {
+                VSCode.window.showErrorMessage("Error" + e);
+            }
+        );
+    }, 10000);
+
+    return commons.activate(options, context);
 }

vscode-extensions/vscode-spring-boot/package.json

@@ -31,6 +31,9 @@
     "onLanguage:java"
   ],
   "contributes": {
+    "javaExtensions": [
+      "./jars/jdt-ls-extension.jar"
+    ],
     "languages": [
       {
         "id": "spring-boot-properties-yaml",

vscode-extensions/vscode-spring-boot/scripts/preinstall.sh

@@ -11,11 +11,17 @@ npm install ../commons-vscode/commons-vscode-*.tgz
 curl https://raw.githubusercontent.com/textmate/yaml.tmbundle/master/Syntaxes/YAML.tmLanguage > yaml-support/yaml.tmLanguage
 curl https://raw.githubusercontent.com/textmate/java.tmbundle/master/Syntaxes/JavaProperties.plist > properties-support/java-properties.tmLanguage
 
+# Clean old jars
+rm -fr ${workdir}/jars
+mkdir -p ${workdir}/jars
+
+# Use maven to build jdt ls extension
+cd ../../headless-services/org.springframework.tooling.jdt.ls.extension
+../mvnw clean package
+cp target/*.jar ${workdir}/jars/jdt-ls-extension.jar
+
 # Use maven to build fat jar of the language server
 cd ../../headless-services/spring-boot-language-server
 ./build.sh
-
-rm -fr ${workdir}/jars
-mkdir -p ${workdir}/jars
 cp target/*.jar ${workdir}/jars