diff --git a/parsers/test_java_opack_0_2_1/META-INF/MANIFEST.MF b/parsers/test_java_opack_0_2_1/META-INF/MANIFEST.MF
new file mode 100644
index 0000000..18bd115
--- /dev/null
+++ b/parsers/test_java_opack_0_2_1/META-INF/MANIFEST.MF
@@ -0,0 +1,3 @@
+Manifest-Version: 1.0
+Main-Class: TestJSONParsing
+Class-Path: opack-0.2.1.jar
diff --git a/parsers/test_java_opack_0_2_1/README.txt b/parsers/test_java_opack_0_2_1/README.txt
new file mode 100644
index 0000000..58ae2a0
--- /dev/null
+++ b/parsers/test_java_opack_0_2_1/README.txt
@@ -0,0 +1,5 @@
+javac -cp opack-0.2.1.jar TestJSONParsing.java
+
+jar cvfm TestJSONParsing.jar META-INF/MANIFEST.MF opack-0.2.1.jar TestJSONParsing.class
+
+java -jar TestJSONParsing.jar
diff --git a/parsers/test_java_opack_0_2_1/TestJSONParsing.class b/parsers/test_java_opack_0_2_1/TestJSONParsing.class
new file mode 100644
index 0000000..dcb0262
Binary files /dev/null and b/parsers/test_java_opack_0_2_1/TestJSONParsing.class differ
diff --git a/parsers/test_java_opack_0_2_1/TestJSONParsing.jar b/parsers/test_java_opack_0_2_1/TestJSONParsing.jar
new file mode 100644
index 0000000..621f5ee
Binary files /dev/null and b/parsers/test_java_opack_0_2_1/TestJSONParsing.jar differ
diff --git a/parsers/test_java_opack_0_2_1/TestJSONParsing.java b/parsers/test_java_opack_0_2_1/TestJSONParsing.java
new file mode 100644
index 0000000..ee43065
--- /dev/null
+++ b/parsers/test_java_opack_0_2_1/TestJSONParsing.java
@@ -0,0 +1,81 @@
+import com.realtimetech.opack.codec.json.Json;
+import com.realtimetech.opack.exception.DecodeException;
+import com.realtimetech.opack.value.OpackValue;
+
+import java.io.BufferedInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+
+public class TestJSONParsing {
+    public static String readFileAutoDetect(Path path) throws IOException {
+        try (InputStream inputStream = Files.newInputStream(path);
+             BufferedInputStream bufferedInputStream = new BufferedInputStream(inputStream)) {
+
+            bufferedInputStream.mark(4);
+
+            byte[] bom = new byte[4];
+            int read = bufferedInputStream.read(bom, 0, bom.length);
+
+            Charset encoding;
+            int bomLength = 0;
+
+            if (read >= 3 && bom[0] == (byte) 0xEF && bom[1] == (byte) 0xBB && bom[2] == (byte) 0xBF) {
+                encoding = StandardCharsets.UTF_8;
+                bomLength = 3;
+            } else if (read >= 2 && bom[0] == (byte) 0xFE && bom[1] == (byte) 0xFF) {
+                encoding = StandardCharsets.UTF_16BE;
+                bomLength = 2;
+            } else if (read >= 2 && bom[0] == (byte) 0xFF && bom[1] == (byte) 0xFE) {
+                encoding = StandardCharsets.UTF_16LE;
+                bomLength = 2;
+            } else {
+                encoding = StandardCharsets.UTF_8;
+            }
+
+            bufferedInputStream.reset();
+            bufferedInputStream.skip(bomLength);
+
+            return new String(bufferedInputStream.readAllBytes(), encoding);
+        }
+    }
+
+    public static boolean isValidJSON(String jsonString) {
+        try {
+            Object object = Json.decodeObject(jsonString);
+
+            System.out.println(object);
+
+            return true;
+        } catch (DecodeException exception) {
+            exception.printStackTrace();
+            return false;
+        }
+    }
+
+    public static void main(String[] args) {
+        if (args.length == 0) {
+            System.out.println("Usage: java TestJSONParsing file.json");
+            System.exit(2);
+        }
+
+        try {
+            String jsonString = readFileAutoDetect(Paths.get(args[0]));
+
+            if (isValidJSON(jsonString)) {
+                System.out.println("valid");
+                System.exit(0);
+            }
+
+            System.out.println("invalid");
+            System.exit(1);
+        } catch (IOException exception) {
+            System.out.println("not found");
+            System.exit(2);
+        }
+    }
+}
diff --git a/parsers/test_java_opack_0_2_1/opack-0.2.1.jar b/parsers/test_java_opack_0_2_1/opack-0.2.1.jar
new file mode 100644
index 0000000..73996bc
Binary files /dev/null and b/parsers/test_java_opack_0_2_1/opack-0.2.1.jar differ
diff --git a/run_tests.py b/run_tests.py
index 462edb6..d4def76 100755
--- a/run_tests.py
+++ b/run_tests.py
@@ -432,6 +432,11 @@
            "url":"https://github.com/michel-kraemer/actson",
            "commands":["/usr/bin/java", "-jar", os.path.join(PARSERS_DIR, "test_java_actson_1_2_0/TestJSONParsing.jar")]
        },
+   "Java Opack 0.2.1":
+       {
+           "url": "https://github.com/realtimetech-solution/opack",
+           "commands": ["/usr/bin/java", "-jar", os.path.join(PARSERS_DIR, "test_java_opack_0_2_1/TestJSONParsing.jar")]
+       },
    "Haskell Aeson 0.11.2.1":
        {
            "url":"https://github.com/bos/aeson",