diff --git a/core-java-lang-oop-2/.gitignore b/core-java-lang-oop-2/.gitignore
new file mode 100644
index 0000000000..3de4cc647e
--- /dev/null
+++ b/core-java-lang-oop-2/.gitignore
@@ -0,0 +1,26 @@
+*.class
+
+0.*
+
+#folders#
+/target
+/neoDb*
+/data
+/src/main/webapp/WEB-INF/classes
+*/META-INF/*
+.resourceCache
+
+# Packaged files #
+*.jar
+*.war
+*.ear
+
+# Files generated by integration tests
+*.txt
+backup-pom.xml
+/bin/
+/temp
+
+#IntelliJ specific
+.idea/
+*.iml
\ No newline at end of file
diff --git a/core-java-lang-oop-2/README.md b/core-java-lang-oop-2/README.md
new file mode 100644
index 0000000000..e309810ba2
--- /dev/null
+++ b/core-java-lang-oop-2/README.md
@@ -0,0 +1,5 @@
+=========
+
+## Core Java Lang OOP 2 Cookbooks and Examples
+
+### Relevant Articles: 
diff --git a/core-java-lang-oop-2/pom.xml b/core-java-lang-oop-2/pom.xml
new file mode 100644
index 0000000000..3faf9fe6ee
--- /dev/null
+++ b/core-java-lang-oop-2/pom.xml
@@ -0,0 +1,27 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>com.baeldung</groupId>
+    <artifactId>core-java-lang-oop-2</artifactId>
+    <version>0.1.0-SNAPSHOT</version>
+    <name>core-java-lang-oop-2</name>
+    <packaging>jar</packaging>
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-java</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../parent-java</relativePath>
+    </parent>
+
+    <build>
+        <finalName>core-java-lang-oop-2</finalName>
+        <resources>
+            <resource>
+                <directory>src/main/resources</directory>
+                <filtering>true</filtering>
+            </resource>
+        </resources>
+    </build>
+
+</project>
diff --git a/core-java-lang-oop-2/src/main/java/com/baeldung/supertypecompilerexception/MyClass.java b/core-java-lang-oop-2/src/main/java/com/baeldung/supertypecompilerexception/MyClass.java
new file mode 100644
index 0000000000..ccf8646f57
--- /dev/null
+++ b/core-java-lang-oop-2/src/main/java/com/baeldung/supertypecompilerexception/MyClass.java
@@ -0,0 +1,16 @@
+package com.baeldung.supertypecompilerexception;
+
+public class MyClass {
+
+    private int myField1 = 10;
+    private int myField2;
+
+    public MyClass() {
+        //uncomment this to see the supertype compiler error:
+        //this(myField1);
+    }
+
+    public MyClass(int i) {
+        myField2 = i;
+    }
+}
\ No newline at end of file
diff --git a/core-java-lang-oop-2/src/main/java/com/baeldung/supertypecompilerexception/MyClassSolutionI.java b/core-java-lang-oop-2/src/main/java/com/baeldung/supertypecompilerexception/MyClassSolutionI.java
new file mode 100644
index 0000000000..36000e4bf4
--- /dev/null
+++ b/core-java-lang-oop-2/src/main/java/com/baeldung/supertypecompilerexception/MyClassSolutionI.java
@@ -0,0 +1,15 @@
+package com.baeldung.supertypecompilerexception;
+
+public class MyClassSolutionI {
+
+    private int myField1 = 10;
+    private int myField2;
+
+    public MyClassSolutionI() {
+        myField2 = myField1;
+    }
+
+    public MyClassSolutionI(int i) {
+        myField2 = i;
+    }
+}
diff --git a/core-java-lang-oop-2/src/main/java/com/baeldung/supertypecompilerexception/MyClassSolutionII.java b/core-java-lang-oop-2/src/main/java/com/baeldung/supertypecompilerexception/MyClassSolutionII.java
new file mode 100644
index 0000000000..f9bc9b26ae
--- /dev/null
+++ b/core-java-lang-oop-2/src/main/java/com/baeldung/supertypecompilerexception/MyClassSolutionII.java
@@ -0,0 +1,19 @@
+package com.baeldung.supertypecompilerexception;
+
+public class MyClassSolutionII {
+
+    private int myField1 = 10;
+    private int myField2;
+
+    public MyClassSolutionII() {
+        setupMyFields(myField1);
+    }
+
+    public MyClassSolutionII(int i) {
+        setupMyFields(i);
+    }
+
+    private void setupMyFields(int i) {
+        myField2 = i;
+    }
+}
diff --git a/core-java-lang-oop-2/src/main/java/com/baeldung/supertypecompilerexception/MyClassSolutionIII.java b/core-java-lang-oop-2/src/main/java/com/baeldung/supertypecompilerexception/MyClassSolutionIII.java
new file mode 100644
index 0000000000..f449aa904d
--- /dev/null
+++ b/core-java-lang-oop-2/src/main/java/com/baeldung/supertypecompilerexception/MyClassSolutionIII.java
@@ -0,0 +1,15 @@
+package com.baeldung.supertypecompilerexception;
+
+public class MyClassSolutionIII {
+
+    private static final int SOME_CONSTANT = 10;
+    private int myField2;
+
+    public MyClassSolutionIII() {
+        this(SOME_CONSTANT);
+    }
+
+    public MyClassSolutionIII(int i) {
+        myField2 = i;
+    }
+}
diff --git a/core-java-lang-oop-2/src/main/java/com/baeldung/supertypecompilerexception/MyException.java b/core-java-lang-oop-2/src/main/java/com/baeldung/supertypecompilerexception/MyException.java
new file mode 100644
index 0000000000..db60deb83f
--- /dev/null
+++ b/core-java-lang-oop-2/src/main/java/com/baeldung/supertypecompilerexception/MyException.java
@@ -0,0 +1,14 @@
+package com.baeldung.supertypecompilerexception;
+
+public class MyException extends RuntimeException {
+    private int errorCode = 0;
+
+    public MyException(String message) {
+        //uncomment this to see the supertype compiler error:
+        //super(message + getErrorCode());
+    }
+
+    public int getErrorCode() {
+        return errorCode;
+    }
+}
diff --git a/core-java-lang-oop-2/src/main/resources/logback.xml b/core-java-lang-oop-2/src/main/resources/logback.xml
new file mode 100644
index 0000000000..56af2d397e
--- /dev/null
+++ b/core-java-lang-oop-2/src/main/resources/logback.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <logger name="org.springframework" level="WARN" />
+    <logger name="org.springframework.transaction" level="WARN" />
+
+    <!-- in order to debug some marshalling issues, this needs to be TRACE -->
+    <logger name="org.springframework.web.servlet.mvc" level="WARN" />
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>
\ No newline at end of file
diff --git a/core-java-lang-oop-2/src/test/resources/.gitignore b/core-java-lang-oop-2/src/test/resources/.gitignore
new file mode 100644
index 0000000000..83c05e60c8
--- /dev/null
+++ b/core-java-lang-oop-2/src/test/resources/.gitignore
@@ -0,0 +1,13 @@
+*.class
+
+#folders#
+/target
+/neoDb*
+/data
+/src/main/webapp/WEB-INF/classes
+*/META-INF/*
+
+# Packaged files #
+*.jar
+*.war
+*.ear
\ No newline at end of file