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Difference between Java 17 and Java 18

Java 17 Java 18
Java 17 new features:

- Java 17 is 8.66% faster than Java 11 and 2.41% faster than Java 16 for G1GC (default).

- Java 17 is 6.54% faster than Java 11 and 0.37% faster than Java 16 for ParallelGC. The Parallel Garbage Collector is 16.39% faster than the G1 Garbage Collector.

- Restore or Rebuild the "Always-Strict Floating-Point" Semantics

- Enhanced faster the "pseudo-Random" Number Generators

- New macOS rendering pipelines

- macOS/AArch64 Port

- Dismiss the Applet API for Removal

- JDK Internals Encapsulate strongly

- Switch Pattern Matching (Preview)

- Activation of the Removal RMI

- Generate sealed Classes

- Removal of the Experimental AOT and JIT Compiler

- Remove the Security Manager.

- Foreign Functions and Memory API (Incubator)

- Vector API (Second Incubator)

- Deserialization Filters Based on Context (content-specific)		Java 18 new features:

- As for Java 18, there is only a six month time difference between it and Java 17, which means the updates aren't as trascendental or numerous as we've been able to see with other releases. However, Java 18 has improvements in terms of its foreign function memory.

- UTF-8 by Default: TheThe default charset of the platform is now UTF-8.

- Simple Web Server: Providing an out-of-the-box static HTTP file server with a simple setup and minimal functionality.

- Code Snippets in Java API Documentation: The Java API documentation provides code examples that illustrate the use of each feature. The examples are provided in a code snippet, which is a small piece of code that Java programmers can insert into a more extensive program.

- Vector API: Java coders can use the new Vector API in Java 18 to perform vector computations. A vector is simply an array of numbers that can be manipulated as a single entity. These vectors help perform numeric computations, especially complex ones that involve many different values.

- Internet-Address Resolution SPI: Java 18 specifies a service-provider interface (SPI) for hostname and address resolution, which java.net may use. InetAddress may use resolvers other than the built-in resolver of the platform. The new InetAddress API locates a resolution provider using a Service Loader.

- Foreign Function and Memory API: To access non-JVM systems, the Java Platform includes many libraries. JDBC Drivers, for example, may be used to connect to RDBMS. It is also feasible to use sockets to activate online services (HTTP client), serve distant clients (NIO channels), or connect with local processes.

- Pattern Matching Improvements: Pattern matching simplifies the implementation of the common pattern of matching an object against a pattern.

- Deprecated Finalization for Removal: The finalize method is part of the legacy Java Object class and was intended to be called by the runtime syst

Related differences

Java 16 vs Java 17Java 17 vs Java 18
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