--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Plugin/JavaString.cpp	Thu Oct 19 11:14:45 2023 +0200
@@ -0,0 +1,57 @@
+/**
+ * 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/>.
+ **/
+
+
+#include "JavaString.h"
+
+#include <stdexcept>
+
+
+JavaString::JavaString(JNIEnv* env,
+                       jstring javaStr) :
+  env_(env),
+  javaStr_(javaStr)
+{
+  if (env == NULL ||
+      javaStr == NULL)
+  {
+    throw std::runtime_error("Null pointer");
+  }
+
+  cStr_ = env_->GetStringUTFChars(javaStr_, &isCopy_);
+  if (cStr_ == NULL)
+  {
+    throw std::runtime_error("Cannot read string");
+  }
+}
+
+
+JavaString::~JavaString()
+{
+  /**
+   * "The ReleaseString-Chars call is necessary whether
+   * GetStringChars has set isCopy to JNI_TRUE or JNI_FALSE."
+   * https://stackoverflow.com/a/5863081
+   **/
+  env_->ReleaseStringUTFChars(javaStr_, cStr_);
+}