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How to use assertions in Java
Use Java assertions to document program correctness and more quickly test and debug your programs
How to describe Java code with annotations
Use annotations to associate metadata with application elements in your Java programs
Packages and static imports in Java
Use packages and static imports to organize top-level types and simplify access to their static members
Data structures and algorithms in Java: A beginner's guide
Learn all about array and list data structures in Java, and the algorithms you can use to search and sort the data they contain
![Deep, nested topographical layers / binary code [BLUE]](https://images.idgesg.net/images/article/2020/02/deep_nested_topographical_layers_by_filo_gettyimages-976105080_binary_by_aleksei_derin_gettyimages-914850254_a-100832266-small.3x2.jpg?auto=webp)
Static classes and inner classes in Java
Learn how to use the four types of nested classes in your Java code
![Deep, nested topographical layers / binary code [GREEN]](https://images.idgesg.net/images/article/2020/02/deep_nested_topographical_layers_by_filo_gettyimages-976105080_binary_by_aleksei_derin_gettyimages-914850254_c-100832265-small.3x2.jpg?auto=webp)
Avoid memory leaks in inner classes
Beware garbage collection when working with inner classes
![Deep, nested topographical layers / binary code [RED]](https://images.idgesg.net/images/article/2020/02/deep_nested_topographical_layers_by_filo_gettyimages-976105080_binary_by_aleksei_derin_gettyimages-914850254_b-100832264-small.3x2.jpg?auto=webp)
Nesting with Java interfaces
Learn three ways to use nesting techniques with Java classes and interfaces
Thirteen rules for developing secure Java applications
Make Java security a top priority at every stage of application development, from class-level language features to API endpoint authorization
![JavaWorld > Android Studio for Beginners [movile java package]](https://images.idgesg.net/images/article/2019/02/jw_android_studio_for_beginners_3x2_1200x800_pkg_idg_google_darkovujic_gettyimages-100788152-small.3x2.jpg?auto=webp)
Tutorial series: Android Studio for beginners
A complete beginner's guide to Android Studio, from installing Android Studio to coding and debugging your first Android app
How to store data in Java objects
A timely introduction to using instance variables in your Java classes
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
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
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.
Socket programming in Java: A tutorial
Three iterations of a Java socket client-server example demonstrate the timeless utility of Java I/O
Inheritance versus composition: How to choose
Compare two fundamental ways to relate classes, then practice debugging ClassCastExceptions in Java inheritance
Does Java pass by reference or pass by value?
You've probably heard before that Java passes by value, but what matters is how well you understand the concept and the code. In this Java Challenger, find out what happens when you pass an object reference to a method in Java
Get started with method references in Java
Why you should use method references instead of anonymous classes in your functional Java programs
Get started with lambda expressions in Java
Learn how to use lambda expressions and functional programming techniques in your Java programs
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