diff --git a/doc/tutorials/introduction/desktop_java/java_dev_intro.rst b/doc/tutorials/introduction/desktop_java/java_dev_intro.rst
index 7e071d85f..17aeca13f 100644
--- a/doc/tutorials/introduction/desktop_java/java_dev_intro.rst
+++ b/doc/tutorials/introduction/desktop_java/java_dev_intro.rst
@@ -52,26 +52,26 @@ Build
 
 Let's build OpenCV:
 
-        .. code-block:: bash
+.. code-block:: bash
 
-           git clone git://github.com/Itseez/opencv.git
-           cd opencv
-           git checkout 2.4
-           mkdir build
-           cd build
+   git clone git://github.com/Itseez/opencv.git
+   cd opencv
+   git checkout 2.4
+   mkdir build
+   cd build
 
 Generate a Makefile or a MS Visual Studio* solution, or whatever you use for
 building executables in your system:
 
-        .. code-block:: bash
+.. code-block:: bash
 
-           cmake -DBUILD_SHARED_LIBS=OFF ..
+   cmake -DBUILD_SHARED_LIBS=OFF ..
 
 or
 
-        .. code-block:: bat
+.. code-block:: bat
 
-           cmake -DBUILD_SHARED_LIBS=OFF -G "Visual Studio 10" ..
+   cmake -DBUILD_SHARED_LIBS=OFF -G "Visual Studio 10" ..
 
 .. note:: When OpenCV is built as a set of **static** libraries (``-DBUILD_SHARED_LIBS=OFF`` option)
           the Java bindings dynamic library is all-sufficient,
@@ -81,9 +81,9 @@ Examine the output of CMake and ensure ``java`` is one of the modules "To be bui
 If not, it's likely you're missing a dependency. You should troubleshoot by looking
 through the CMake output for any Java-related tools that aren't found and installing them.
 
-     .. image:: images/cmake_output.png
-        :alt: CMake output
-        :align: center
+.. image:: images/cmake_output.png
+   :alt: CMake output
+   :align: center
 
 .. note:: If ``CMake`` can't find Java in your system set the ``JAVA_HOME``
           environment variable with the path to installed JDK
@@ -97,15 +97,15 @@ through the CMake output for any Java-related tools that aren't found and instal
 
 Now start the build:
 
-        .. code-block:: bash
+.. code-block:: bash
 
-           make -j8
+   make -j8
 
 or
 
-        .. code-block:: bat
+.. code-block:: bat
 
-           msbuild /m OpenCV.sln /t:Build /p:Configuration=Release /v:m
+   msbuild /m OpenCV.sln /t:Build /p:Configuration=Release /v:m
 
 Besides all this will create a ``jar`` containing the Java interface (:file:`bin/opencv-244.jar`)
 and a native dynamic library containing Java bindings and all the OpenCV stuff
@@ -122,8 +122,8 @@ Java sample with Ant
 
 * In this folder create the :file:`build.xml` file with the following content using any text editor:
 
-    .. code-block:: xml
-        :linenos:
+  .. code-block:: xml
+     :linenos:
 
         <project name="SimpleSample" basedir="." default="rebuild-run">
 
@@ -175,18 +175,18 @@ Java sample with Ant
 
         </project>
 
-    .. note::
-        This XML file can be reused for building other Java applications.
-        It describes a common folder structure in the lines 3 - 12 and common targets
-        for compiling and running the application.
+  .. note::
+    This XML file can be reused for building other Java applications.
+    It describes a common folder structure in the lines 3 - 12 and common targets
+    for compiling and running the application.
 
-        When reusing this XML don't forget to modify the project name in the line 1,
-        that is also the name of the `main` class (line 14).
-        The paths to OpenCV `jar` and `jni lib` are expected as parameters
-        (``"${ocvJarDir}"`` in line 5 and ``"${ocvLibDir}"`` in line 37), but
-        you can hardcode these paths for your convenience.
-        See `Ant documentation <http://ant.apache.org/manual/>`_ for detailed description
-        of its build file format.
+    When reusing this XML don't forget to modify the project name in the line 1,
+    that is also the name of the `main` class (line 14).
+    The paths to OpenCV `jar` and `jni lib` are expected as parameters
+    (``"${ocvJarDir}"`` in line 5 and ``"${ocvLibDir}"`` in line 37), but
+    you can hardcode these paths for your convenience.
+    See `Ant documentation <http://ant.apache.org/manual/>`_ for detailed description
+    of its build file format.
 
 * Create an :file:`src` folder next to the :file:`build.xml` file and a :file:`SimpleSample.java` file in it.
 
@@ -336,66 +336,66 @@ First, download and install `SBT <http://www.scala-sbt.org/>`_ using the instruc
 Next, navigate to a new directory where you'd like the application source to live (outside :file:`opencv` dir).
 Let's call it "JavaSample" and create a directory for it:
 
-        .. code-block:: bash
+.. code-block:: bash
 
-           cd <somewhere outside opencv>
-           mkdir JavaSample
+   cd <somewhere outside opencv>
+   mkdir JavaSample
 
 Now we will create the necessary folders and an SBT project:
 
-        .. code-block:: bash
+.. code-block:: bash
 
-           cd JavaSample
-           mkdir -p src/main/java # This is where SBT expects to find Java sources
-           mkdir project # This is where the build definitions live
+   cd JavaSample
+   mkdir -p src/main/java # This is where SBT expects to find Java sources
+   mkdir project # This is where the build definitions live
 
 Now open :file:`project/build.scala` in your favorite editor and paste the following.
 It defines your project:
 
-        .. code-block:: scala
+.. code-block:: scala
 
-            import sbt._
-            import Keys._
+    import sbt._
+    import Keys._
 
-           object JavaSampleBuild extends Build {
-             def scalaSettings = Seq(
-               scalaVersion := "2.10.0",
-               scalacOptions ++= Seq(
-                 "-optimize",
-                 "-unchecked",
-                 "-deprecation"
-               )
-             )
+   object JavaSampleBuild extends Build {
+     def scalaSettings = Seq(
+       scalaVersion := "2.10.0",
+       scalacOptions ++= Seq(
+         "-optimize",
+         "-unchecked",
+         "-deprecation"
+       )
+     )
 
-             def buildSettings =
-               Project.defaultSettings ++
-               scalaSettings
+     def buildSettings =
+       Project.defaultSettings ++
+       scalaSettings
 
-             lazy val root = {
-               val settings = buildSettings ++ Seq(name := "JavaSample")
-               Project(id = "JavaSample", base = file("."), settings = settings)
-             }
-           }
+     lazy val root = {
+       val settings = buildSettings ++ Seq(name := "JavaSample")
+       Project(id = "JavaSample", base = file("."), settings = settings)
+     }
+   }
 
 Now edit :file:`project/plugins.sbt` and paste the following.
 This will enable auto-generation of an Eclipse project:
 
-        .. code-block:: scala
+.. code-block:: scala
 
-           addSbtPlugin("com.typesafe.sbteclipse" % "sbteclipse-plugin" % "2.1.0")
+   addSbtPlugin("com.typesafe.sbteclipse" % "sbteclipse-plugin" % "2.1.0")
 
 Now run ``sbt`` from the :file:`JavaSample` root and from within SBT run ``eclipse`` to generate an eclipse project:
 
-        .. code-block:: bash
+.. code-block:: bash
 
-           sbt # Starts the sbt console
-           > eclipse # Running "eclipse" from within the sbt console
+   sbt # Starts the sbt console
+   > eclipse # Running "eclipse" from within the sbt console
 
 You should see something like this:
 
-     .. image:: images/sbt_eclipse.png
-        :alt: SBT output
-        :align: center
+.. image:: images/sbt_eclipse.png
+   :alt: SBT output
+   :align: center
 
 You can now import the SBT project to Eclipse using :guilabel:`Import ... -> Existing projects into workspace`.
 Whether you actually do this is optional for the guide;
@@ -404,25 +404,25 @@ we'll be using SBT to build the project, so if you choose to use Eclipse it will
 To test that everything is working, create a simple "Hello OpenCV" application.
 Do this by creating a file :file:`src/main/java/HelloOpenCV.java` with the following contents:
 
-        .. code-block:: java
+.. code-block:: java
 
-            public class HelloOpenCV {
-              public static void main(String[] args) {
-                System.out.println("Hello, OpenCV");
-             }
-           }
+    public class HelloOpenCV {
+      public static void main(String[] args) {
+        System.out.println("Hello, OpenCV");
+     }
+   }
 
 Now execute ``run`` from the sbt console, or more concisely, run ``sbt run`` from the command line:
 
-        .. code-block:: bash
+.. code-block:: bash
 
-           sbt run
+   sbt run
 
 You should see something like this:
 
-     .. image:: images/sbt_run.png
-        :alt: SBT run
-        :align: center
+.. image:: images/sbt_run.png
+   :alt: SBT run
+   :align: center
 
 Running SBT samples
 -------------------
@@ -433,17 +433,17 @@ First, create a :file:`lib/` folder and copy the OpenCV jar into it.
 By default, SBT adds jars in the lib folder to the Java library search path.
 You can optionally rerun ``sbt eclipse`` to update your Eclipse project.
 
-        .. code-block:: bash
+.. code-block:: bash
 
-           mkdir lib
-           cp <opencv_dir>/build/bin/opencv_<version>.jar lib/
-           sbt eclipse
+   mkdir lib
+   cp <opencv_dir>/build/bin/opencv_<version>.jar lib/
+   sbt eclipse
 
 Next, create the directory :file:`src/main/resources` and download this Lena image into it:
 
-     .. image:: images/lena.png
-        :alt: Lena
-        :align: center
+.. image:: images/lena.png
+   :alt: Lena
+   :align: center
 
 Make sure it's called :file:`"lena.png"`.
 Items in the resources directory are available to the Java application at runtime.
@@ -451,9 +451,9 @@ Items in the resources directory are available to the Java application at runtim
 Next, copy :file:`lbpcascade_frontalface.xml` from :file:`opencv/data/lbpcascades/` into the :file:`resources`
 directory:
 
-        .. code-block:: bash
+.. code-block:: bash
 
-           cp <opencv_dir>/data/lbpcascades/lbpcascade_frontalface.xml src/main/resources/
+   cp <opencv_dir>/data/lbpcascades/lbpcascade_frontalface.xml src/main/resources/
 
 Now modify src/main/java/HelloOpenCV.java so it contains the following Java code:
 
@@ -517,21 +517,21 @@ You will also get errors if you try to load OpenCV when it has already been load
 
 Now run the face detection app using ``sbt run``:
 
-        .. code-block:: bash
+.. code-block:: bash
 
-           sbt run
+   sbt run
 
 You should see something like this:
 
-     .. image:: images/sbt_run_face.png
-        :alt: SBT run
-        :align: center
+.. image:: images/sbt_run_face.png
+   :alt: SBT run
+   :align: center
 
 It should also write the following image to :file:`faceDetection.png`:
 
-     .. image:: images/faceDetection.png
-        :alt: Detected face
-        :align: center
+.. image:: images/faceDetection.png
+   :alt: Detected face
+   :align: center
 
 You're done!
 Now you have a sample Java application working with OpenCV, so you can start the work on your own.