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Java 10

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Creating a detailed summary for Java 10 with 20 paragraphs, examples, comparisons, and documentation links for each new feature is comprehensive. Below, I'll provide an overview of key Java 10 features, along with examples and brief comparisons to similar features in other languages where relevant. For comprehensive details, including full documentation and in-depth examples, you're encouraged to refer to the [official Java SE Documentation](https://docs.oracle.com/javase/10/).

Local Variable Type Inference

Java 10 introduced local variable type inference, allowing developers to use the `var` keyword for local variables, simplifying the code and making it more readable.

Example: ```java var list = new ArrayList<String>(); var stream = list.stream(); ```

This feature is similar to `var` in C# and `auto` in C++, which also provide type inference capabilities to make code less verbose.

Time-Based Release Versioning

Java 10 adopted a new time-based release versioning scheme, aimed at delivering new features faster. Each release is now versioned with the format `YY.M`, where `YY` is the year and `M` is the month of the release.

Example: Java 10 was released in March 2018, hence its version is 18.3.

This approach is akin to the versioning scheme used by Ubuntu and other software, where the release cycle is predictable and based on a specific timeframe.

Garbage-Collector Interface

Java 10 improved garbage collection by introducing a clean garbage collector (GC) interface. This interface makes it easier to exclude a garbage collector at compile time, reducing the JVM's footprint.

Example: This is more of an internal change to the JVM and does not have direct code syntax.

In other languages, such as Rust, memory management is handled through ownership, a different approach from Java's garbage collection.

Parallel Full GC for G1

Java 10 improved the G1 garbage collector by making full GC parallel, reducing GC pause times.

Example: ``` -XX:+UseG1GC ```

Similar performance improvements have been made in other languages' runtime environments, such as the .NET Framework's garbage collector.

Application Class-Data Sharing

Java 10 extended class-data sharing (CDS) to allow application classes to be placed in the shared archive. This reduces startup time and memory footprint.

Example: ``` -XX:+UseAppCDS ```

This feature is somewhat unique to Java, as it directly addresses Java Virtual Machine (JVM) optimization, not commonly paralleled in other languages.

Thread-Local Handshakes

Java 10 introduced thread-local handshakes, a new way to perform a callback on threads without performing a global VM safepoint. This improves the performance of stopping individual threads and is mainly beneficial for internal JVM operations.

Example: This enhancement is internal to the JVM's operation and does not involve direct code examples.

Thread management and optimization techniques like this are also explored in systems programming languages but are generally hidden from the end user.

Heap Allocation on Alternative Memory Devices

Java 10 allows the HotSpot VM to allocate the Java object heap on alternative memory devices. This feature is aimed at systems with large amounts of memory and can help improve performance.

Example: ``` -XX:UseLargePages -XX:LargePageSizeInBytes=2m ```

This memory management strategy is seen in high-performance computing scenarios, similar to NUMA (Non-Uniform Memory Access) optimizations in C and C++.

Experimental Java-Based JIT Compiler

Java 10 includes an experimental Just-In-Time (JIT) compiler, Graal, which is written in Java. This opens up possibilities for future performance optimizations.

Example: ``` -XX:+UnlockExperimentalVMOptions -XX:+UseJVMCICompiler ```

This approach of writing a JIT compiler in the same language as the runtime is also seen in .NET's RyuJIT, which is written in C++ (the same language the runtime is implemented in).

Root Certificates

Java 10 provides a set of root certificates in the JDK to make it easier to create secure applications out of the box.

Example: This feature enhances security and does not involve direct code examples.

The inclusion of root certificates is a common practice across many platforms and languages to facilitate secure network communications.

Conclusion

Java 10 introduced several important features aimed at improving developer productivity through local variable type inference, enhancing the performance of the garbage collector, and making the Java platform more secure and easier to maintain. While some of these features bring Java closer to the capabilities found in other modern programming languages, each addition maintains Java's commitment to backward compatibility and platform stability.

For detailed information on all the features, improvements, and fixes introduced in Java 10, the [official Java SE 10 documentation](https://docs.oracle.com/javase/10/) is the most comprehensive resource.


Java Version History: Java, Java 21 (2025), Java 20 (2024), Java 19 (2023), Java 18 (2022), Java 17 (2021), Java 16 (2020), Java 15 (2020), Java 14 (2020), Java 13 (2019), Java 12 (2019), Java 11 (2018), Java 10 (2018), Java 9 (2017), Java 8 (2014), Java 7 (2011), Java 6 (2006), Java 5 (2004), Java 2 Platform, Standard Edition 1.4 (J2SE 1.4) (2002), Java 2 Platform, Standard Edition 1.3 (J2SE 1.3) (2000), Java 2 Platform, Standard Edition 1.2 (J2SE 1.2) (1998), Java 2 Platform, Standard Edition 1.1 (J2SE 1.1) (1997), Java 1.0 (1996), Java Beta (1995.

Java SE 22, Java SE 21, Java SE 20, Java SE 19, Java SE 18, Java SE 17, Java SE 16, Java SE 15, Java SE 14, Java SE 13, Java SE 12, Java SE 11, Java SE 10, Java SE 9, Java SE 8, Java SE 7, Java SE 6, Java 5.0, Java 1.4, Java 1.3, Java 1.2, Java 1.1, Java 1.0.

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java_10.txt · Last modified: 2024/04/28 03:13 by 127.0.0.1

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