What's New in Java 8: Java 8 New Features

Explore online integrated development environments for Java 8, showing how copy-and-paste coding lets you write and run simple programs instantly when a local setup is unavailable.

Explore online IDEs to write and run Java 8 code in your browser, compare anonymous inner class with lambda expressions, and see hello world output.

Set up your Java development environment by downloading the Java standard edition, installing the JVM and JDK, and configuring the installation path across Windows, Mac, and Linux.

Discover useful editors and IDEs for Java 8 development, learn to compile and run Java programs from the command line, and see results in Eclipse.

Explore lambda expressions introduced in Java 8 and their use in functional programming with interfaces. Learn the syntax, including parameter and expression body and optional type, parentheses, braces, and return.

Explore lambda expressions in Java 8 by defining a functional interface with a single method and implementing operations such as division, subtraction, and multiplication using lambdas.

Explore scope in Java 8 lambda expressions by using a functional interface with a single method, demonstrating effectively final variables and message output in a simple example.

Explore Java 8 method references by using the double colon symbol to point to static methods, instance methods, and constructors.

Explore method references in Java 8 using the double colon syntax to point to methods and print a string list, highlighting differences from traditional calls.

Explore Java 8 functional interfaces, which define single methods to enable lambda expressions and support two-argument operations like predicates, suppliers, and consumers, with about 43 interfaces.

Explore functional interfaces in Java 8 by implementing a predicate with a single boolean method, using lambda expressions to filter a list and apply a custom evaluate method.

Java 8 introduces default methods in interfaces, providing default implementations for methods like forEach to support lambda expressions and ensure backward compatibility for collection interfaces.

Explore how Java 8 introduces default methods in interfaces, enabling deferred implementation and lambda-friendly usage. See how super calls retrieve default implementations in implementing classes.

Java 8 streams API Part 1 presents streams as a source-based sequence of on-demand objects for declarative data processing, with aggregate, intermediate, and terminal operations and a collect step.

Discover how to generate streams from a Java collection, apply map and forEach operations, and sort stream elements to process data with the streams API in Java 8.

Introduce java 8 streams for data processing, compare java 7 vs java 8 implementations, and demonstrate filtering non-empty strings, deleting nulls, and collecting results, plus mapping to squares.

Learn to merge a list of strings into a single, separator-delimited string using Java 8 streams. Use a string builder or a concise one-liner with collectors to skip empty values.

Compare Java 7 and Java 8 by generating random numbers with streams, using limit, sorted, and forEach to display a sorted sequence of random numbers.

Discover how Java 8 streams use lambda expressions to map numbers to their squares, collect distinct results, and compare this concise approach with traditional Java 7 looping.

Explore java 8's optional class as a container for potentially absent values, and learn how isPresent, get, and mapping enable safe handling of present values.

Explore how the optional class represents null or absent values and use isPresent to check and retrieve values when available in Java 8.

Explore Java 8's date and time API, addressing old design flaws, and improving time zone handling with new utility methods.

Explore the Java 8 date time API with a hands-on example using local date time and zone date time, showing current date time, extracting fields, and formatting.

Learn to use the zoned date time API to parse a time string, extract the zone id, and identify the current zone, with an example in Los Angeles.