diff --git a/.idea/checkstyle-idea.xml b/.idea/checkstyle-idea.xml
new file mode 100644
index 0000000000..f0c49846ff
--- /dev/null
+++ b/.idea/checkstyle-idea.xml
@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CheckStyle-IDEA" serialisationVersion="2">
+    <checkstyleVersion>10.12.2</checkstyleVersion>
+    <scanScope>JavaOnly</scanScope>
+    <copyLibs>true</copyLibs>
+    <option name="thirdPartyClasspath" />
+    <option name="activeLocationIds" />
+    <option name="locations">
+      <list>
+        <ConfigurationLocation id="bundled-sun-checks" type="BUNDLED" scope="All" description="Sun Checks">(bundled)</ConfigurationLocation>
+        <ConfigurationLocation id="bundled-google-checks" type="BUNDLED" scope="All" description="Google Checks">(bundled)</ConfigurationLocation>
+      </list>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/image-processing/src/main/java/com/baeldung/imageprocessing/opencv/OpencvVersion.java b/image-processing/src/main/java/com/baeldung/imageprocessing/opencv/OpencvVersion.java
new file mode 100644
index 0000000000..9a16a87a57
--- /dev/null
+++ b/image-processing/src/main/java/com/baeldung/imageprocessing/opencv/OpencvVersion.java
@@ -0,0 +1,28 @@
+package com.baeldung.imageprocessing.opencv;
+
+import org.opencv.core.Core;
+
+/**
+ * Print OpenCV Version Number
+ */
+public class OpencvVersion {
+    static {
+        System.loadLibrary(Core.NATIVE_LIBRARY_NAME);
+    }
+
+    public static void main(String[] args) {
+
+        if ((1 == args.length) && (0 == args[0].compareTo("--build"))) {
+
+            System.out.println(Core.getBuildInformation());
+        } else if ((1 == args.length) && (0 == args[0].compareTo("--help"))) {
+
+            System.out.println("\t--build\n\t\tprint complete build info");
+            System.out.println("\t--help\n\t\tprint this help");
+        } else {
+
+            System.out.println("Welcome to OpenCV " + Core.VERSION);
+        }
+    }
+
+}
\ No newline at end of file
diff --git a/toolkits/codebank/src/test/java/com/ossez/toolkits/codebank/tests/lintcode/LintCode0035BitOperationTest.java b/toolkits/codebank/src/test/java/com/ossez/toolkits/codebank/tests/lintcode/LintCode0035BitOperationTest.java
new file mode 100644
index 0000000000..3a5f46ed88
--- /dev/null
+++ b/toolkits/codebank/src/test/java/com/ossez/toolkits/codebank/tests/lintcode/LintCode0035BitOperationTest.java
@@ -0,0 +1,45 @@
+package com.ossez.toolkits.codebank.tests.lintcode;
+
+import com.ossez.toolkits.codebank.tests.EmptyQuickTest;
+import org.apache.commons.math3.util.FastMath;
+import org.junit.jupiter.api.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * <p>
+ * 35
+ * <ul>
+ * <li>@see
+ * <a href= "https://www.lintcode.com/problem/reverse-linked-list/description">https://www.lintcode.com/problem/reverse-linked-list/description</a>
+ * <li>@see<a href= "https://www.lintcode.com/problem/reverse-linked-list/description">https://www.lintcode.com/problem/reverse-linked-list/description</a>
+ * </ul>
+ * </p>
+ *
+ * @author YuCheng
+ */
+
+public class LintCode0035BitOperationTest {
+
+    private final static Logger logger = LoggerFactory.getLogger(EmptyQuickTest.class);
+
+    /**
+     * 35
+     */
+    @Test
+    public void testInt2Bit() {
+        logger.debug("BEGIN");
+        System.out.println(Integer.toBinaryString(5));
+        System.out.println(Integer.toBinaryString(2));
+
+        System.out.println(Integer.toBinaryString(2 << 2));
+
+        System.out.println(Integer.parseInt(Integer.toBinaryString(2 << 2), 2));
+
+        System.out.println(5 / 3);
+        System.out.println(5 % 3);
+        FastMath.pow(2, 3);
+
+    }
+
+}