Tutorials

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Functional programming for Java developers, Part 2

Rewrite object-oriented code using functional techniques. Get started with lambdas, method references, functional interfaces, and the Streams API in Java

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Java 101: Functional programming for Java developers, Part 1

Optimize your Java code with these five functional programming techniques

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What is a Java servlet? Request handling for Java web applications

The Java Servlet API is part of the Java EE stack, providing URL mapping and request handling capabilities for Java web applications

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Built for realtime: Big data messaging with Apache Kafka, Part 2

Learn how to use Apache Kafka's partitions, message offsets, and consumer groups to distribute load and scale your applications horizontally, handling up to millions of messages per day

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Java Challengers #4: Comparing Java objects with equals() and hashcode()

What is the contract between equals() and hashcode()? Learn how these methods work together when comparing Java objects

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What is the JRE? Introduction to the Java Runtime Environment

The JRE creates the JVM and ensures dependencies are available to your Java programs. It also plays a vital role in devops and cloud configurations

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Mastering Spring framework 5, Part 2: Spring WebFlux

Build reactive web applications using Spring WebFlux annotations and functional programming techniques

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Java 101: Mastering Java exceptions, Part 2

Take your Java exceptions to the next level with stack traces, exception chaining, try-with-resources, final re-throw, and more

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What is the JDK? Introduction to the Java Development Kit

The JDK is a key platform component for building Java applications. At its heart is the Java compiler

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Java 101: Mastering Java exceptions, Part 1

Everything you need to know about throwing, trying, catching, and cleaning up after Java exceptions

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Java 101: Datastructures and algorithms in Java, Part 5

In addition to singly linked lists, Java offers several other types of list that you can use to search and sort stored data in your Java programs.

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Java Challengers #2: String comparisons

How String methods, keywords, and operators process comparisons in the String pool

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What is the JVM? Introducing the Java virtual machine

The Java virtual machine manages system memory and provides a portable execution environment for Java-based applications. Developers reap the rewards in performance, stability, and predictable runtimes.

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Big data analytics with Neo4j and Java, Part 2

The tricky part of Neo4j is learning to work with its Cypher Query Language, which requires thinking graphically. Once you've got that down, writing a Java application that integrates with your Neo4j data store is easy.

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Java 101: Datastructures and algorithms in Java, Part 4

Learn how to search and sort linked lists in Java! Examples in this tutorial demonstrate how to create a singly linked list, insert and delete nodes in a singly linked list, and more. Find out which algorithms are most used to sort...

Java Q&A post 36: Language oddities

Java language oddities

The Java language includes various behaviors that may puzzle newcomers to the language. This post examines three such behaviors involving arrays, bytes and shorts, and private fields and methods.

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Java 101: Datastructures and algorithms in Java, Part 3

Multidimensional arrays are useful for complex computing scenarios, and ragged arrays can help conserve memory for big data applications. Learn how to create multidimensional arrays and ragged arrays and use them in your Java programs....

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Base64 encoding and decoding in Java 8

Java 8 will be remembered mainly for introducing lambdas, streams, a new date/time model, and Nashorn--but don't miss the new Base64 API. It could be just what you need to ensure data integrity in transit.

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