5 - Fifth commit to split core-java. This one includes:

* to core-java-lang:
  * https://www.baeldung.com/java-separate-double-into-integer-decimal-parts
  * https://www.baeldung.com/java-sneaky-throws
  * https://www.baeldung.com/java-inheritance-composition
* to core-java-array:
  * https://www.baeldung.com/java-array-copy
  * https://www.baeldung.com/java-initialize-array
  * https://www.baeldung.com/java-array-contains-value
  * https://www.baeldung.com/java-invert-array
  * https://www.baeldung.com/java-array-sum-average
  * https://www.baeldung.com/java-jagged-arrays
  * https://www.baeldung.com/java-util-arrays
  * https://www.baeldung.com/java-common-array-operations (from core-java-collections)

core-java-arrays/.gitignore

@@ -0,0 +1,25 @@
+*.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
+backup-pom.xml
+/bin/
+/temp
+
+#IntelliJ specific
+.idea/
+*.iml