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Recent How-to Tutorials

JavaBean Validation - validationAppliesTo Examples  JavaBean Validation JAVA EE 

JavaBean Validation - SupportedValidationTarget Examples  JavaBean Validation JAVA EE 

Spring Framework - ObjectProvider Examples  Spring Framework 

Spring Framework - ApplicationContextAware Examples  Spring Framework 

JUnit - How to test user command line Input in Java?  JUnit Java Command Line 

Spring Framework - @Named Examples  Spring Framework 

Spring Framework - @Inject Examples  Spring Framework 

Java - Find Files in classpath under a Folder And SubFolder  Java Spring Framework 

Java - How to find enum by ordinal?  Java Enum 

Java - How to delete old files under a folder if number of files are over a specified limit?  Java IO & NIO 

Java Date Time - ValueRange API Examples  Java Date Time Java Java API 

Java - How to convert Calendar to LocalDateTime?  Java Date Time Java 

Java - How to Indent multiline String?  Java String Manipulation Java 

Java - Parsing String To Numeric Primitives  Java Number Classes Java 

Java - Avoiding possible NullPointerException with method call chain  Java 

Java Collections - How to find frequency of each element in a collection?  Java Collections 

How to convert java.util.Map To Java Bean?  Java Bean Components Java 

Java - How to repeat a string n number of times?  Java String Manipulation Java 

Java - How to convert Iterator To List?  Java Collections Java 

How to find the longest and the shortest String in Java?  Java String Manipulation Java Collections Java 

How to find first and last element of Java 8 stream?  Java 8 Streams Java 

Java Collections - Why Arrays.asList() does not work for primitive arrays?  Java Collections Java 

Java Collections - Only put Map key/value if the specified key does not exist  Java Collections Java 

How to connect a Database server in Intellij Community Edition?  Intellij 

Java IO - How to write lines To a file and read lines from a files?  Java IO & NIO Java 

Java Collections - How to find distinct elements count in collections and arrays?  Java Collections Java 

Java - How to find Available Runtime Memory?  Java 

Java - Different ways to Set Nested Field Value By Reflection  Java Reflection Java 

Java - Different ways to Set Field Value by Reflection  Java Reflection Java 

Installing Python 2.7 on windows  Python 

Installing Cassandra And Intro To CQLSH  Cassandra 

Installing and Running Kafka  Kafka 

Installing MongoDB On Windows 10 and Getting started with MongoDB Compass  MongoDb NoSql 

Extract files from Windows 10 Backup image - Mounting/Attaching VHD/VHDX  MS Windows 

Linux - What is the superuser home dir?  Linux Ubuntu 

Java - Converting FileTime To Formatted String and vice versa  Java Date Time Java 

Regex - Java Regex Examples  Regex Java 

Java IO - Copy Directories In Parallel  Java IO & NIO 

How to apply Java Regex to any Command Line Output?  Java Tools & Commands 

Installing Windows On Multiple Computers with a single RETAIL License Key  MS Windows 

Java Command Line - Sending Command Input To Java via command line pipe  Java Command Line 

How to completely uninstall/remove Visual Studio Code IDE?  Visual Studio Code IDE 

Java Stack Walking - How to find name of the current method?  Java Stack Walking Java 

Spring Boot - StandardEnvironment Examples  Spring Boot 

Installing Git on Windows  Git 

Java Reflection - Constructor API Examples  Java Reflection Java Java API 

Syntactic Sugar  Software Engineering Java 

Installing Oracle Jdbc Driver to local Maven Repository  Database 

Java - How to insert new element in an array by index?  Java Arrays 

Quick intro to Node JS  JavaScript 

JPA - How to get department name with maximum salary in JPQL?  JPA JAVA EE 

Java 8 Functional Interfaces - BooleanSupplier API Examples  Java 8 Functional Interfaces Java Java API 

Java 8 Functional Interfaces - BiPredicate API Examples  Java 8 Functional Interfaces Java Java API 

Java 8 Functional Interfaces - BinaryOperator API Examples  Java 8 Functional Interfaces Java Java API 

Java 8 Functional Interfaces - BiFunction API Examples  Java 8 Functional Interfaces Java Java API 

Java 8 Functional Interfaces - BiConsumer API Examples  Java 8 Functional Interfaces Java Java API 

Java Collections - How to remove a range of elements from collections?  Java Collections Java 

Java - Converting LocalTime, LocalDate and LocalDateTime to java.util.Calendar and java.util.Date  Java Date Time Java 

Java Swing - How to set caret position of a JTextComponent at a given Point?  Java Swing 

Java - How to split file path by file separator character?  Java IO & NIO Java 

Java Collections - DelayQueue API Examples  Java Collections Java Java API 

Java Collections - ArrayBlockingQueue API Examples  Java Collections Java Java API 

Java 8 Streams - StreamSupport API Examples  Java 8 Streams Java Java API 

Random, SecureRandom, ThreadLocalRandom and SplittableRandom - Different ways to create Random numbers in Java  Java Random Java 

Java - How to get next or previous enum constant by a current instance?  Java Enum 

Java - How to add new item to a Collection while enforcing a fixed size and removing old item?  Java Collections Java 

Java - How to remove array element by index?  Java Arrays Java 

Java - How to set BigDecimal Precision?  Java Number Classes Java