java-tutorials/core-java

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Core Java Cookbooks and Examples

Relevant Articles:

• Immutable ArrayList in Java
• Converting between an Array and a List in Java
• Converting between an Array and a Set in Java
• Converting between a List and a Set in Java
• Convert a Map to an Array, List or Set in Java
• Java – Random Long, Float, Integer and Double
• Java – Generate Random String
• Java Timer
• How to Run a Shell Command in Java
• MD5 Hashing in Java
• Guide to the Java ArrayList
• Guide to Java Reflection
• A Guide to Java Sockets
• Convert char to String in Java
• Random List Element
• Convert String to int or Integer in Java
• Java – Try with Resources
• Guide to the Fork/Join Framework in Java
• How to Print Screen in Java
• How to Convert String to different data types in Java
• Introduction to Java Generics
• Generate equals() and hashCode() with Eclipse
• A Guide To Java Regular Expressions API
• Sorting in Java
• Getting Started with Java Properties
• Grep in Java
• Java - Combine Multiple Collections
• Simulated Annealing for Travelling Salesman Problem
• Slope One Algorithm: Collaborative Filtering Recommendation Systems
• Pattern Search with Grep in Java
• URL Encoding and Decoding in Java
• The Basics of Java Generics
• The Traveling Salesman Problem in Java
• How to Create an Executable JAR with Maven
• How to Design a Genetic Algorithm in Java
• Guide to WeakHashMap in Java
• Spring Security – Cache Control Headers
• Basic Introduction to JMX
• AWS Lambda With Java
• Introduction to Nashorn
• Guide to the Guava BiMap
• Chained Exceptions in Java
• The Java HashMap Under the Hood
• A Guide to LinkedHashMap in Java
• A Guide to TreeMap in Java
• A Quick JUnit vs TestNG Comparison
• Java Primitive Conversions
• Java Money and the Currency API
• Removing all nulls from a List in Java
• Removing all duplicates from a List in Java
• Using Math.pow in Java
• Converting Strings to Enums in Java
• Flattening Nested Collections in Java
• Quick Guide to the Java StringTokenizer
• JVM Log Forging
• Guide to sun.misc.Unsafe
• HashSet and TreeSet Comparison
• How to Perform a Simple HTTP Request in Java
• Call Methods at Runtime Using Java Reflection
• Guide to UUID in JAVA
• How to Add a Single Element to a Stream
• Iterating Over Enum Values in Java
• Kotlin Java Interoperability
• How to Round a Number to N Decimal Places in Java
• Changing Annotation Parameters At Runtime
• How to Find all Getters Returning Null
• Changing the Order in a Sum Operation Can Produce Different Results?
• How to Get a Name of a Method Being Executed?
• Iterate over a Map in Java
• Dynamic Proxies in Java
• How to Copy an Array in Java
• Introduction to JDBC
• Period and Duration in Java
• Converting a Stack Trace to a String in Java
• Count Occurrences of a Char in a String
• Java Double Brace Initialization
• The StackOverflowError in Java
• Split a String in Java
• Introduction to Java Serialization
• How to Remove the Last Character of a String?
• ClassNotFoundException vs NoClassDefFoundError
• Guide to UUID in Java
• Guide to Escaping Characters in Java RegExps
• Guide to hashCode() in Java
• Collect a Java Stream to an Immutable Collection
• Difference between URL and URI
• Broadcasting and Multicasting in Java
• Converting a List to String in Java
• CharSequence vs. String in Java
• Period and Duration in Java
• Guide to the Diamond Operator in Java
• Singletons in Java
• “Sneaky Throws” in Java
• OutOfMemoryError: GC Overhead Limit Exceeded
• StringBuilder and StringBuffer in Java
• Number of Digits in an Integer in Java
• Proxy, Decorator, Adapter and Bridge Patterns
• Creating a Java Compiler Plugin
• A Guide to the Static Keyword in Java
• Initializing Arrays in Java
• Guide to Java String Pool
• Introduction to Creational Design Patterns
• Quick Example - Comparator vs Comparable in Java
• Quick Guide to Java Stack
• The Java continue and break Keywords
• Introduction to the Java ArrayDeque
• Guide to java.util.Formatter
• Batch Processing in JDBC
• Check if a Java Array Contains a Value
• How to Invert an Array in Java
• Guide to the Cipher Class
• A Guide to Java Initialization
• Implementing a Binary Tree in Java
• A Guide to ThreadLocalRandom in Java
• RegEx for matching Date Pattern in Java
• Introduction to the JDBC RowSet Interface in Java
• Nested Classes in Java
• A Guide to Java Loops
• Varargs in Java
• A Guide to HashSet in Java
• A Guide to Inner Interfaces in Java
• Polymorphism in Java
• Recursion In Java
• A Guide to the finalize Method in Java
• Compiling Java *.class Files with javac
• Method Overloading and Overriding in Java
• A Guide to TreeSet in Java
• Guide to ThreadLocalRandom in Java
• Java TreeMap vs HashMap
• A Guide to Iterator in Java
• The Trie Data Structure in Java
• Introduction to Javadoc
• How to TDD a List Implementation
• How to Make a Deep Copy of an Object in Java
• Check if a String is a Palindrome
• Comparing Strings in Java
• Guide to Inheritance in Java
• Guide to Externalizable Interface in Java
• The Observer Pattern in Java
• Flyweight Pattern in Java
• Object Type Casting in Java
• A Practical Guide to DecimalFormat
• How to Detect the OS Using Java
• How to TDD a List Implementation in Java
• ASCII Art in Java
• An Advanced Tagging Implementation with JPA
• Handling Daylight Savings Time in Java
• Inheritance and Composition (Is-a vs Has-a relationship) in Java
• The "final" Keyword in Java