Java 10 features with examples

Category : Java | Sub Category : Java 10 features | By Prasad Bonam Last updated: 2023-08-09 13:15:25 Viewed : 56

Java 10 features with examples :

here are some Java 10 features with examples to illustrate their usage:

1. Local-Variable Type Inference (var):

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   var name = "John"; // Inferred as String
   var numbers = List.of(1, 2, 3); // Inferred as List<Integer>
   

2. Application Class-Data Sharing:

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   # Create an archive file containing shared class data
   $ java -Xshare:dump
   
   # Use shared archive during application launch
   $ java -Xshare:on -jar myapp.jar
   

3. Time-Based Release Versioning:

   Java 10 introduced the new versioning scheme, where versions are named based on their release date, e.g., 10, 11, 12, etc.

4. Parallel Full GC for G1:

   Enable parallel full garbage collection for the G1 collector:

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   $ java -XX:+UseG1GC -XX:+UseParallelGC -XX:+ParallelRefProcEnabled -jar myapp.jar
   

5. Thread-Local Handshakes:

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   Thread.onSpinWait(); // Code to execute during thread-local handshake
   

6. Thread-Local Random Number Generator:

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   ThreadLocalRandom random = ThreadLocalRandom.current();
   int randomNumber = random.nextInt(1, 101); // Generates a random number between 1 and 100
   

7. Additional Unicode Language-Tag Extensions:

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   Locale locale = Locale.forLanguageTag("en-u-ca-buddhist-t-TH");
   System.out.println(locale.getUnicodeLocaleType("ca")); // Output: buddhist
   

8. Heap Allocation on Alternative Memory Devices:

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   // Enable experimental features for alternative memory devices
   $ java -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC -XX:+UseAOT -jar myapp.jar
   

9. Experimental AOT (Ahead-of-Time) Compilation:

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   # Generate native executable using AOT compilation
   $ java -XX:+UnlockExperimentalVMOptions -XX:+UseAOT -XX:AOTLibrary=./mylib.so -jar myapp.jar
   

These examples provide a practical overview of some Java 10 features and how you can use them in your applications. Keep in mind that Java 10 is no longer the latest version, and there have been subsequent versions with additional features and improvements.