========= ## Core Java Cookbooks and Examples ### Relevant Articles: - [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 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) - [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) - [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) - [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) - [Chained Exceptions in Java](http://www.baeldung.com/java-chained-exceptions) - [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) - [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) - [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) - [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) - [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) - [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) - [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) - [“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) - [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) - [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) - [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 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) - [Guide to ThreadLocalRandom in Java](http://www.baeldung.com/java-thread-local-random) - [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 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) - [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) - [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) - [Finding Max/Min of a List or Collection](http://www.baeldung.com/java-collection-min-max) - [The "final" Keyword in Java](http://www.baeldung.com/java-final) - [What is the serialVersionUID?](http://www.baeldung.com/java-serial-version-uid) - [A Guide To UDP In Java](http://www.baeldung.com/udp-in-java) - [A Guide to the Java LinkedList](http://www.baeldung.com/java-linkedlist) - [A Guide to Java Enums](http://www.baeldung.com/a-guide-to-java-enums) - [A Guide to the ResourceBundle](http://www.baeldung.com/java-resourcebundle) - [Quick Guide to java.lang.System](http://www.baeldung.com/java-lang-system) - [Class Loaders in Java](http://www.baeldung.com/java-classloaders) - [Find Sum and Average in a Java Array](http://www.baeldung.com/java-array-sum-average) - [Java List UnsupportedOperationException](http://www.baeldung.com/java-list-unsupported-operation-exception) - [Type Erasure in Java Explained](http://www.baeldung.com/java-type-erasure) - [BigDecimal and BigInteger in Java](http://www.baeldung.com/java-bigdecimal-biginteger) - [Display All Time Zones With GMT And UTC in Java](http://www.baeldung.com/java-time-zones) - [Join and Split Arrays and Collections in Java](http://www.baeldung.com/java-join-and-split) - [Check If Two Lists are Equal in Java](http://www.baeldung.com/java-test-a-list-for-ordinality-and-equality) - [Sending Emails with Java](http://www.baeldung.com/java-email) - [Introduction to SSL in Java](http://www.baeldung.com/java-ssl) - [Java KeyStore API](http://www.baeldung.com/java-keystore) - [Double-Checked Locking with Singleton](http://www.baeldung.com/java-singleton-double-checked-locking) - [Guide to Java Clock Class](http://www.baeldung.com/java-clock)