JAVA 23 IN 2 MINUTES | JAVA 23 FEATURES |WHAT'S NEW IN JAVA 23' BETTER DOC, BETTER API| InterviewDOT

JAVA 23 IN 2 MINUTES | JAVA 23 FEATURES |WHAT'S NEW IN JAVA 23" BETTER DOC, BETTER API| InterviewDOT

Here is a list of key features introduced in **Java 23**:

### **1. Virtual Threads (Project Loom)**
- **Description**: Virtual threads significantly improve concurrency by making threads lightweight. They allow developers to create a large number of threads without worrying about system resources. Virtual threads provide the same abstraction as traditional threads but at a much lower cost.
- **Benefit**: Simplifies the development of scalable, high-throughput applications by improving concurrency handling, particularly in server-side applications.

### **2. Sequenced Collections**
- **Description**: New interfaces (`SequencedCollection`, `SequencedSet`, and `SequencedMap`) are introduced to represent collections that maintain both insertion and access order.
- **Benefit**: Offers a consistent way to work with ordered collections, improving readability and convenience when working with ordered data structures like `List` and `LinkedHashMap`.

### **3. Record Patterns**
- **Description**: Introduces record patterns for pattern matching, which allows you to match and destructure data from record types within `instanceof` expressions and `switch` statements.
- **Benefit**: Simplifies the syntax for working with records and data classes, making the code more concise and readable.

### **4. Pattern Matching for `switch` (Enhanced)**
- **Description**: This feature enhances the pattern matching for `switch` statements, allowing more expressive and safer ways of handling conditions. You can now match types, constants, or decompose record patterns in `switch`.
- **Benefit**: Reduces boilerplate code and increases the flexibility of `switch` statements, making them easier to work with and more powerful.

### **5. String Templates (Preview)**
- **Description**: String templates allow for easier and safer string formatting by embedding expressions within text. They provide more readable syntax for constructing dynamic strings using expressions inside placeholders.

### **6. Enhanced Generational ZGC**
- **Description**: ZGC (Z Garbage Collector) receives enhancements with generational support, which allows it to handle short-lived objects more efficiently.
- **Benefit**: Reduces garbage collection overhead by optimizing memory management, leading to better performance for memory-intensive applications.

### **7. Scoped Values (Preview)**
- **Description**: Scoped values provide an alternative to thread-local variables, offering a more efficient way to share immutable data across threads, particularly in conjunction with virtual threads.
- **Benefit**: Improves performance when sharing data between virtual threads, without the overhead of traditional thread-local variables.

### **8. Unnamed Patterns and Variables**
- **Description**: This feature allows for the use of unnamed patterns and variables in destructuring patterns. You can ignore specific components of a pattern match when they aren’t needed, using `_` as a wildcard.
- **Benefit**: Simplifies code by allowing you to focus on only the relevant components of a pattern match, improving code readability.

### **9. Improved Foreign Function & Memory API (Third Preview)**
- **Description**: This API allows Java programs to efficiently interoperate with native code and handle off-heap memory. The Foreign Function & Memory API has been improved further, allowing easier and safer interaction with non-Java memory and functions.
- **Benefit**: Enhances performance and flexibility for applications that need to interact with native libraries or perform low-level memory manipulation.

### **10. Deprecation and Future Removal of Finalization**
- **Description**: Java is deprecating finalization with plans for removal in a future version. Finalization has been known to cause issues in resource management, and alternatives like `try-with-resources` are preferred.
- **Benefit**: Promotes the use of more reliable resource management techniques, improving application performance and stability.

### **11. Classfile API**
- **Description**: Java 23 introduces a new Classfile API for reading and writing Java class files. This provides a way to inspect and manipulate class file structures.
- **Benefit**: Useful for tooling developers, this API simplifies the process of working with Java bytecode and class files, without relying on external libraries.