--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Plugin/JavaEnvironment.h	Thu Oct 19 08:49:07 2023 +0200
@@ -0,0 +1,90 @@
+/**
+ * SPDX-FileCopyrightText: 2023 Sebastien Jodogne, UCLouvain, Belgium
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+/**
+ * Java plugin for Orthanc
+ * Copyright (C) 2023 Sebastien Jodogne, UCLouvain, Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+
+#pragma once
+
+#include "JavaVirtualMachine.h"
+
+#include <orthanc/OrthancCPlugin.h>
+
+#include <vector>
+
+
+class JavaEnvironment : public NonCopyable
+{
+private:
+  JavaVM *jvm_;
+  JNIEnv *env_;
+
+public:
+  JavaEnvironment(JNIEnv* env);
+
+  JavaEnvironment(JavaVirtualMachine& jvm);
+
+  ~JavaEnvironment();
+
+  JNIEnv& GetValue();
+
+  void CheckException();
+
+  void ThrowException(const std::string& fqn,
+                      const std::string& message);
+
+  void ThrowOrthancException(const std::string& message);
+
+  void ThrowOrthancException(OrthancPluginErrorCode code);
+
+  static void ThrowOrthancException(JNIEnv* env,
+                                    const std::string& message);
+
+  static void ThrowOrthancException(JNIEnv* env,
+                                    OrthancPluginErrorCode code);
+
+  void RegisterNatives(const std::string& fqn,
+                       const std::vector<JNINativeMethod>& methods);
+
+  void RunGarbageCollector();
+
+  jclass FindClass(const std::string& fqn);
+
+  jclass GetObjectClass(jobject obj);
+
+  jmethodID GetMethodID(jclass c,
+                        const std::string& method,
+                        const std::string& signature);
+
+  jobject ConstructJavaWrapper(const std::string& fqn,
+                               void* nativeObject);
+
+  jbyteArray ConstructByteArray(const size_t size,
+                                const void* data);
+
+  jbyteArray ConstructByteArray(const std::string& data)
+  {
+    return ConstructByteArray(data.size(), data.c_str());
+  }
+
+  jobject ConstructEnumValue(const std::string& fqn,
+                             int value);
+};