Fix: some CI issues and use jdk 25

Author: yuvicc

.github/workflows/ci.yml

@@ -35,10 +35,10 @@ jobs:
         with:
           submodules: recursive
 
-      - name: Set up JDK 24
+      - name: Set up JDK 25
         uses: actions/setup-java@v5
         with:
-          java-version: 24
+          java-version: 25
           distribution: 'temurin'
           cache: 'gradle'
 
@@ -80,14 +80,14 @@ jobs:
         if: always()
         uses: actions/upload-artifact@v4
         with:
-          name: test-results-${{ matrix.os }}-java24
+          name: test-results-${{ matrix.os }}-java25
           path: |
             build/reports/tests/
             build/test-results/
 
       - name: Upload build artifacts
         if: success()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
-          name: build-artifacts-${{ matrix.os }}-java24
+          name: build-artifacts-${{ matrix.os }}-java25
           path: build/libs/

README.md

@@ -5,7 +5,6 @@
 ## ⚠️ Status
 
 This library is **alpha**—under work in progress. APIs may change and functionality is still incomplete. Contributions and bug reports are welcome!
-You can check out this [PR](https://github.com/yuvicc/java-bitcoinkernel/pull/4) section for more details.
 
 ## Overview
 
@@ -17,10 +16,6 @@ You can check out this [PR](https://github.com/yuvicc/java-bitcoinkernel/pull/4)
 - Block validation - todo
 - Clean Java-native bindings via FFM with minimal overhead
 
-## Building
-
-We vendor Bitcoin Core’s `libbitcoinkernel` using a Git subtree targeting the `kernelApi` branch from your fork:
-
 ```bash
 git subtree pull \
   --prefix bitcoinkernel/bitcoin \
@@ -30,9 +25,8 @@ git subtree pull \
 
 ## Requirements
 - CMake
-- C++17 compiler (e.g. GCC/Clang)
-- Boost
-- JDK 25+ with FFM support
+- C++20 compiler (for compiling Bitcoin Core)
+- JDK 25 for compiling Java
 
 Refer to Bitcoin Core [docs](https://github.com/bitcoin/bitcoin/blob/master/doc/build-unix.md) for dependency specifics.
 

build.gradle

@@ -14,7 +14,7 @@ dependencies {
 
 java {
     toolchain {
-        languageVersion = JavaLanguageVersion.of(24)
+        languageVersion = JavaLanguageVersion.of(25)
     }
 }
 

src/main/java/org/bitcoinkernel/jextract/bitcoinkernel_h.java

@@ -26,7 +26,7 @@ public class bitcoinkernel_h extends bitcoinkernel_h$shared {
         // Load the bitcoinkernel library
         SymbolLookup lookup = null;
         try {
-            System.loadLibrary("bitcoinkernel");
+            System.loadLibrary("libbitcoinkernel");
             lookup = SymbolLookup.loaderLookup();
         } catch (UnsatisfiedLinkError e) {
             // Fall back to default lookup (LD_LIBRARY_PATH)