Java 17 Feature ES 38

Java 17, released in September 2021, is a Long-Term Support (LTS) version. It introduced several new features and enhancements that improve performance, security, and developer productivity. Below are key features in Java 17, along with examples:
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1. Sealed Classes and Interface
Sealed classes restrict which classes can extend or implement them. This ensures better control over inheritance and helps model hierarchical relationships.
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2. Pattern Matching for switch (Preview Feature)
Simplifies and enhances the switch statement to work with patterns and types.
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3. Enhanced Pseudo-Random Number Generators
New interfaces and implementations for random number generators were introduced in java.util.random.
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4. Text Blocks Enhancements
Text blocks, introduced earlier, make it easier to work with multiline strings. In Java 17, escape sequences are handled better.
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5. Removal of Deprecated APIs
Several deprecated APIs were removed, such as the Applet API. Ensure you're not using deprecated features when upgrading.
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. JEP 356: Enhanced NullPointerException Messages
Java 17 provides detailed error messages for NullPointerException.
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7. Foreign Function and Memory API (Incubator)
A powerful API for interacting with native code and memory directly, avoiding JNI.
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8. Deprecation of Security Manager
The Security Manager is deprecated and marked for removal in a future release.