Fixes compilation and running from within VS Code (#1902)

- added missing package to StripeRequestTest
- increased the language server per-thread stack size (Xss) to 8m so lombok can run
- added eclipse access rule for com.sun.net.httpserver.* so the langauge server does not report them as errors to the debugger

.vscode/settings.json

@@ -18,9 +18,9 @@
   },
   "java.configuration.updateBuildConfiguration": "automatic",
   // LSP was ooming and it recommended this change
-  "java.jdt.ls.vmargs": "-XX:+UseParallelGC -XX:GCTimeRatio=4 -XX:AdaptiveSizePolicyWeight=90 -Dsun.zip.disableMemoryMapping=true -Xmx2G -Xms100m -Xlog:disable",
+  // (jar) added -Xss8m so lombok would run without stack overflowing
+  "java.jdt.ls.vmargs": "-XX:+UseParallelGC -XX:GCTimeRatio=4 -XX:AdaptiveSizePolicyWeight=90 -Dsun.zip.disableMemoryMapping=true -Xmx2G -Xms100m -Xlog:disable -Xss8m",
   "java.test.config": {
     "vmargs": [ "-Dstripe.disallowGlobalResponseGetterFallback=true"]
-
-  }
+  },
 }

build.gradle

@@ -164,3 +164,23 @@ jacoco
     // test code instrumentation for Java 18
     toolVersion = "0.8.8"
 }
+
+
+// Used when developing in vscode-java; some of our examples use
+// com.sun.net.httpserver.  This is safe to do because the JDK
+// team has committed to ensuring jdk.httpserver is exported.
+// See https://openjdk.org/jeps/403, "Exported com.sun APIs"
+import org.gradle.plugins.ide.eclipse.model.AccessRule
+
+apply plugin: 'eclipse'
+
+eclipse {
+    classpath {
+        file {
+            whenMerged {
+                def jre = entries.find { it.path.contains 'org.eclipse.jdt.launching.JRE_CONTAINER' }
+                jre.accessRules.add(new AccessRule('0', 'com/sun/net/httpserver/**'))
+            }
+        }
+    }
+}