java-tutorials/core-java/README.md

=========

## Core Java Cookbooks and Examples

### Relevant Articles: 
- [Immutable ArrayList in Java](http://www.baeldung.com/java-immutable-list)
- [Converting between an Array and a List in Java](http://www.baeldung.com/convert-array-to-list-and-list-to-array)
- [Converting between an Array and a Set in Java](http://www.baeldung.com/convert-array-to-set-and-set-to-array)
- [Converting between a List and a Set in Java](http://www.baeldung.com/convert-list-to-set-and-set-to-list)
- [Convert a Map to an Array, List or Set in Java](http://www.baeldung.com/convert-map-values-to-array-list-set)
- [Java – Random Long, Float, Integer and Double](http://www.baeldung.com/java-generate-random-long-float-integer-double)
- [Java – Generate Random String](http://www.baeldung.com/java-random-string)
- [Java Timer](http://www.baeldung.com/java-timer-and-timertask)
- [How to Run a Shell Command in Java](http://www.baeldung.com/run-shell-command-in-java)
- [MD5 Hashing in Java](http://www.baeldung.com/java-md5)
- [Guide to the Java ArrayList](http://www.baeldung.com/java-arraylist)
- [Guide to Java Reflection](http://www.baeldung.com/java-reflection)
- [A Guide to Java Sockets](http://www.baeldung.com/a-guide-to-java-sockets)
- [Convert char to String in Java](http://www.baeldung.com/java-convert-char-to-string)
- [Random List Element](http://www.baeldung.com/java-random-list-element)
- [Convert String to int or Integer in Java](http://www.baeldung.com/java-convert-string-to-int-or-integer)
- [Java – Try with Resources](http://www.baeldung.com/java-try-with-resources)
- [Guide to the Fork/Join Framework in Java](http://www.baeldung.com/java-fork-join)
- [How to Print Screen in Java](http://www.baeldung.com/print-screen-in-java)
- [How to Convert String to different data types in Java](http://www.baeldung.com/java-string-conversions)
- [Introduction to Java Generics](http://www.baeldung.com/java-generics)
- [Generate equals() and hashCode() with Eclipse](http://www.baeldung.com/java-eclipse-equals-and-hashcode)
- [A Guide To Java Regular Expressions API](http://www.baeldung.com/regular-expressions-java)
- [Sorting in Java](http://www.baeldung.com/java-sorting)
- [Getting Started with Java Properties](http://www.baeldung.com/java-properties)
- [Grep in Java](http://www.baeldung.com/grep-in-java)
- [Java - Combine Multiple Collections](http://www.baeldung.com/java-combine-multiple-collections)
- [Simulated Annealing for Travelling Salesman Problem](http://www.baeldung.com/java-simulated-annealing-for-traveling-salesman)
- [Slope One Algorithm: Collaborative Filtering Recommendation Systems](http://www.baeldung.com/java-collaborative-filtering-recommendations)
- [Pattern Search with Grep in Java](http://www.baeldung.com/grep-in-java)
- [URL Encoding and Decoding in Java](http://www.baeldung.com/java-url-encoding-decoding)
- [The Basics of Java Generics](http://www.baeldung.com/java-generics)
- [The Traveling Salesman Problem in Java](http://www.baeldung.com/java-simulated-annealing-for-traveling-salesman)
- [How to Create an Executable JAR with Maven](http://www.baeldung.com/executable-jar-with-maven)
- [How to Design a Genetic Algorithm in Java](http://www.baeldung.com/java-genetic-algorithm)
- [Guide to WeakHashMap in Java](http://www.baeldung.com/java-weakhashmap)
- [Spring Security – Cache Control Headers](http://www.baeldung.com/spring-security-cache-control-headers)
- [Basic Introduction to JMX](http://www.baeldung.com/java-management-extensions)
- [AWS Lambda With Java](http://www.baeldung.com/java-aws-lambda)
- [Introduction to Nashorn](http://www.baeldung.com/java-nashorn)
- [Guide to the Guava BiMap](http://www.baeldung.com/guava-bimap)
- [Chained Exceptions in Java](http://www.baeldung.com/java-chained-exceptions)
- [The Java HashMap Under the Hood](http://www.baeldung.com/java-hashmap)
- [A Guide to LinkedHashMap in Java](http://www.baeldung.com/java-linked-hashmap)
- [A Guide to TreeMap in Java](http://www.baeldung.com/java-treemap)
- [A Quick JUnit vs TestNG Comparison](http://www.baeldung.com/junit-vs-testng)
- [Java Primitive Conversions](http://www.baeldung.com/java-primitive-conversions)
- [Java Money and the Currency API](http://www.baeldung.com/java-money-and-currency)
- [Removing all nulls from a List in Java](http://www.baeldung.com/java-remove-nulls-from-list)
- [Removing all duplicates from a List in Java](http://www.baeldung.com/java-remove-duplicates-from-list)
- [Using Math.pow in Java](http://www.baeldung.com/java-math-pow)
- [Converting Strings to Enums in Java](http://www.baeldung.com/java-string-to-enum)
- [Flattening Nested Collections in Java](http://www.baeldung.com/java-flatten-nested-collections)
- [Quick Guide to the Java StringTokenizer](http://www.baeldung.com/java-stringtokenizer)
- [JVM Log Forging](http://www.baeldung.com/jvm-log-forging)
- [Guide to sun.misc.Unsafe](http://www.baeldung.com/java-unsafe)
- [HashSet and TreeSet Comparison](http://www.baeldung.com/java-hashset-vs-treeset)
- [How to Perform a Simple HTTP Request in Java](http://www.baeldung.com/java-http-request)
- [Call Methods at Runtime Using Java Reflection](http://www.baeldung.com/java-method-reflection)
- [Guide to UUID in JAVA](http://www.baeldung.com/guide-to-uuid-in-java)
- [How to Add a Single Element to a Stream](http://www.baeldung.com/java-stream-append-prepend)
- [Iterating Over Enum Values in Java](http://www.baeldung.com/java-enum-iteration)
- [Kotlin Java Interoperability](http://www.baeldung.com/kotlin-java-interoperability)
- [How to Round a Number to N Decimal Places in Java](http://www.baeldung.com/java-round-decimal-number)
- [Changing Annotation Parameters At Runtime](http://www.baeldung.com/java-reflection-change-annotation-params)
- [How to Find all Getters Returning Null](http://www.baeldung.com/java-getters-returning-null)
- [Changing the Order in a Sum Operation Can Produce Different Results?](http://www.baeldung.com/java-floating-point-sum-order)
- [How to Get a Name of a Method Being Executed?](http://www.baeldung.com/java-name-of-executing-method)
- [Iterate over a Map in Java](http://www.baeldung.com/java-iterate-map)
- [Dynamic Proxies in Java](http://www.baeldung.com/java-dynamic-proxies)
- [How to Copy an Array in Java](http://www.baeldung.com/java-array-copy)
- [Introduction to JDBC](http://www.baeldung.com/java-jdbc)
- [Period and Duration in Java](http://www.baeldung.com/java-period-duration)
- [Converting a Stack Trace to a String in Java](http://www.baeldung.com/java-stacktrace-to-string)
- [Count Occurrences of a Char in a String](http://www.baeldung.com/java-count-chars)
- [Java Double Brace Initialization](http://www.baeldung.com/java-double-brace-initialization)
- [The StackOverflowError in Java](http://www.baeldung.com/java-stack-overflow-error)
- [Split a String in Java](http://www.baeldung.com/java-split-string)
- [Introduction to Java Serialization](http://www.baeldung.com/java-serialization)
- [How to Remove the Last Character of a String?](http://www.baeldung.com/java-remove-last-character-of-string)
- [ClassNotFoundException vs NoClassDefFoundError](http://www.baeldung.com/java-classnotfoundexception-and-noclassdeffounderror)
- [Guide to UUID in Java](http://www.baeldung.com/java-uuid)
- [Guide to Escaping Characters in Java RegExps](http://www.baeldung.com/java-regexp-escape-char)
- [Guide to hashCode() in Java](http://www.baeldung.com/java-hashcode)
- [Collect a Java Stream to an Immutable Collection](http://www.baeldung.com/java-stream-immutable-collection)
- [Difference between URL and URI](http://www.baeldung.com/java-url-vs-uri)
- [Broadcasting and Multicasting in Java](http://www.baeldung.com/java-broadcast-multicast)
- [Converting a List to String in Java](http://www.baeldung.com/java-list-to-string)
- [CharSequence vs. String in Java](http://www.baeldung.com/java-char-sequence-string)
- [Period and Duration in Java](http://www.baeldung.com/java-period-duration)
- [Guide to the Diamond Operator in Java](http://www.baeldung.com/java-diamond-operator)
- [Singletons in Java](http://www.baeldung.com/java-singleton)
- [“Sneaky Throws” in Java](http://www.baeldung.com/java-sneaky-throws)
- [OutOfMemoryError: GC Overhead Limit Exceeded](http://www.baeldung.com/java-gc-overhead-limit-exceeded)
- [StringBuilder and StringBuffer in Java](http://www.baeldung.com/java-string-builder-string-buffer)
- [Number of Digits in an Integer in Java](http://www.baeldung.com/java-number-of-digits-in-int)
- [Proxy, Decorator, Adapter and Bridge Patterns](http://www.baeldung.com/java-structural-design-patterns)
- [Creating a Java Compiler Plugin](http://www.baeldung.com/java-build-compiler-plugin)
- [A Guide to the Static Keyword in Java](http://www.baeldung.com/java-static)
- [Initializing Arrays in Java](http://www.baeldung.com/java-initialize-array)
- [Guide to Java String Pool](http://www.baeldung.com/java-string-pool)
- [Introduction to Creational Design Patterns](http://www.baeldung.com/creational-design-patterns)
- [Quick Example - Comparator vs Comparable in Java](http://www.baeldung.com/java-comparator-comparable)
- [Quick Guide to Java Stack](http://www.baeldung.com/java-stack)
- [The Java continue and break Keywords](http://www.baeldung.com/java-continue-and-break)
- [Introduction to the Java ArrayDeque](http://www.baeldung.com/java-array-deque)
- [Guide to java.util.Formatter](http://www.baeldung.com/java-string-formatter)
- [Batch Processing in JDBC](http://www.baeldung.com/jdbc-batch-processing)
- [Check if a Java Array Contains a Value](http://www.baeldung.com/java-array-contains-value)
- [How to Invert an Array in Java](http://www.baeldung.com/java-invert-array)
- [Guide to the Cipher Class](http://www.baeldung.com/java-cipher-class)
- [A Guide to Java Initialization](http://www.baeldung.com/java-initialization)
- [Implementing a Binary Tree in Java](http://www.baeldung.com/java-binary-tree)
- [A Guide to ThreadLocalRandom in Java](http://www.baeldung.com/java-thread-local-random)
- [RegEx for matching Date Pattern in Java](http://www.baeldung.com/java-date-regular-expressions)
- [Introduction to the JDBC RowSet Interface in Java](http://www.baeldung.com/java-jdbc-rowset)
- [Nested Classes in Java](http://www.baeldung.com/java-nested-classes)
- [A Guide to Java Loops](http://www.baeldung.com/java-loops)
- [Varargs in Java](http://www.baeldung.com/java-varargs)
- [A Guide to HashSet in Java](http://www.baeldung.com/java-hashset)
- [A Guide to Inner Interfaces in Java](http://www.baeldung.com/java-inner-interfaces)
- [Polymorphism in Java](http://www.baeldung.com/java-polymorphism)
- [Recursion In Java](http://www.baeldung.com/java-recursion)
- [A Guide to the finalize Method in Java](http://www.baeldung.com/java-finalize)
- [Compiling Java *.class Files with javac](http://www.baeldung.com/javac)
- [Method Overloading and Overriding in Java](http://www.baeldung.com/java-method-overload-override)
- [A Guide to TreeSet in Java](http://www.baeldung.com/java-tree-set)
- [Guide to ThreadLocalRandom in Java](http://www.baeldung.com/java-thread-local-random)
- [Java TreeMap vs HashMap](http://www.baeldung.com/java-treemap-vs-hashmap)
- [A Guide to Iterator in Java](http://www.baeldung.com/java-iterator)
- [The Trie Data Structure in Java](http://www.baeldung.com/trie-java)
- [Introduction to Javadoc](http://www.baeldung.com/javadoc)
- [How to TDD a List Implementation](http://jira.baeldung.com/browse/BAEL-1537)
- [How to Make a Deep Copy of an Object in Java](http://www.baeldung.com/java-deep-copy)
- [Check if a String is a Palindrome](http://www.baeldung.com/java-palindrome)
- [Comparing Strings in Java](http://www.baeldung.com/java-compare-strings)
- [Guide to Inheritance in Java](http://www.baeldung.com/java-inheritance)
- [Guide to Externalizable Interface in Java](http://www.baeldung.com/java-externalizable)
- [The Observer Pattern in Java](https://github.com/eugenp/tutorials/tree/master/core-java)
- [Flyweight Pattern in Java](http://www.baeldung.com/java-flyweight)
- [Object Type Casting in Java](http://www.baeldung.com/java-type-casting)
- [A Practical Guide to DecimalFormat](http://www.baeldung.com/java-decimalformat)
- [How to Detect the OS Using Java](http://www.baeldung.com/java-detect-os)
- [How to TDD a List Implementation in Java](http://www.baeldung.com/java-test-driven-list)
- [ASCII Art in Java](http://www.baeldung.com/ascii-art-in-java)
- [An Advanced Tagging Implementation with JPA](http://www.baeldung.com/jpa-tagging-advanced)
- [Handling Daylight Savings Time in Java](http://www.baeldung.com/java-daylight-savings)
- [Inheritance and Composition (Is-a vs Has-a relationship) in Java](http://www.baeldung.com/java-inheritance-composition)
- [The "final" Keyword in Java](http://www.baeldung.com/java-final)