Software Highlights
Lambda expression:
This is the most iconic feature of JDK 1.8, which introduces a concise syntax to create anonymous functions, such as (parameters) -> expression or (parameters) -> { statements; }.
Lambda expressions make it possible to pass behaviors (functions) as parameters to methods, opening the door to the application of functional programming in Java, greatly simplifying code, especially in set operations and concurrent programming.
Functional interface:
Refers to an interface with only one abstract method. JDK 1.8 provides the @FunctionalInterface annotation to identify them.
Common functional interfaces include Runnable, Callable, and the new Predicate under the java.util.function package
Stream API:
Provides an efficient and easy-to-use way to process data collections (such as Collection), allowing complex operations on data in a declarative (what to do, not how to do) style, such as filtering, mapping, sorting, reduction, collection, etc.
The advantage of the Stream API is that the code is simpler and more readable, and it can easily use multi-core architecture for parallel computing (through parallelStream()).
New datetime API:
Completely solves the design flaws of the old java.util.Date and java.util.Calendar classes (such as variability, thread unsafety, poor API design).
Core classes such as LocalDate, LocalTime, LocalDateTime, ZonedDateTime, Instant, Duration, and Period are introduced. All classes are immutable and thread-safe, and the API design is clear and intuitive.
Software features
Cross-platform:
JDK 1.8 inherits the consistent cross-platform advantages of the Java language and can run and develop Java applications on a variety of operating systems (such as Windows, Linux, macOS, etc.).
Performance optimization:
Oracle has optimized the performance of JDK 1.8, including the JVM's garbage collection mechanism, compiler optimization, etc., which has significantly improved the running speed of Java applications.
Ease of use improvements:
New features such as Lambda expressions, new date and time API, and Stream API are introduced to simplify the code structure and improve the readability and simplicity of the code.
Security enhancements:
Provides a more secure data processing and transmission mechanism to protect applications from security threats.
Rich API library:
Extends and enhances a large number of Java standard libraries to provide more options for various programming tasks.
Software function
Java program development:
JDK 1.8 provides all the tools and libraries needed to write, test and run Java applications, including javac compiler, java runtime environment and various practical tools (such as jdb debugger, etc.).
Lambda expression:
Lambda expressions are a core feature introduced in JDK 1.8. They allow functions to be used as parameters of methods (functional interfaces), thereby simplifying the code structure and improving code readability and flexibility.
Stream API:
The Stream API provides efficient, declarative processing capabilities for collection objects, supports serial and parallel processing, and greatly improves data processing efficiency. It allows developers to process data collections (including arrays, etc.) in a declarative manner, such as filtering, sorting, mapping, etc.
New datetime API:
It solves the complexity of date and time processing in the old version and provides more intuitive and easy-to-use time management functions. The new datetime API has better thread safety and ease of use.
Nashorn JavaScript engine:
Allows JavaScript code to be run directly in Java applications, enhancing Java's interoperability with Web technologies.
Enterprise-level application development support:
The stability and performance of JDK 1.8 make it the first choice for enterprise-level application development. It supports the development of large-scale enterprise-level applications, especially when handling large amounts of data and concurrent users.
Web development support:
Combined with modern web technologies such as the Spring framework, JDK 1.8 can provide powerful back-end support. It supports Web technologies such as Servlet and JSP, allowing developers to build high-performance Web applications.
Mobile application development support:
Although Android Studio uses a higher version of the JDK, JDK 1.8 is still a common tool for many Android developers. It provides support for Android development, allowing developers to use Java language for mobile application development.
FAQ
An error occurred in the script of the current page
Problem description: When installing JDK 1.8, you may encounter the prompt "An error occurred in the script of the current page".
Solution:
Confirm whether other versions of Java are installed in the system. If so, check whether they are incompatible with JDK 1.8. Incompatible versions need to be uninstalled or updated first.
Make sure that the downloaded JDK installation package is suitable for the current operating system. Download the JDK 1.8 installation package that matches the operating system from the Oracle official website.
If you encounter the error "Unable to install Java configuration file" when installing on a Windows system, it may be caused by configuration files left over from previous Java versions. At this time, you can delete the configuration file mentioned in the error message (such as java.settings.cfg), and then perform the installation again.
jdk1.8 update log:
1. The pace of optimization never stops!
2. More little surprises are waiting for you to discover~
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