fabian20ro commented on issue #686:
URL:
https://github.com/apache/datasketches-java/issues/686#issuecomment-3526676275
Is this issue showing up on java 25 like this? I have temurin 25 LTS and I
get this error with 8.0.0, while with 7.0.1 it works ok.
```
Caused by: java.lang.UnsupportedClassVersionError:
org/apache/datasketches/memory/Resource (class file version 65.65535) was
compiled with preview features that are unsupported. This version of the Java
Runtime only recognizes preview features for class file version 69.65535
at java.base/java.lang.ClassLoader.defineClass1(Native Method)
at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:962)
at
java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:144)
at
java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:776)
at
java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:691)
at
java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:620)
at
java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:578)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:490)
at java.base/java.lang.Class.getDeclaredConstructors0(Native Method)
at
java.base/java.lang.Class.privateGetDeclaredConstructors(Class.java:2985)
at java.base/java.lang.Class.getDeclaredConstructors(Class.java:2354)
at
net.bytebuddy.description.method.MethodList$ForLoadedMethods.<init>(MethodList.java:151)
at
net.bytebuddy.description.type.TypeDescription$ForLoadedType.getDeclaredMethods(TypeDescription.java:9027)
at
net.bytebuddy.description.type.TypeDescription$Generic$OfNonGenericType.getDeclaredMethods(TypeDescription.java:3778)
at
net.bytebuddy.description.type.TypeDescription$Generic$LazyProjection.getDeclaredMethods(TypeDescription.java:6276)
at
net.bytebuddy.dynamic.scaffold.subclass.ConstructorStrategy$Default$5.doExtractConstructors(ConstructorStrategy.java:175)
at
net.bytebuddy.dynamic.scaffold.subclass.ConstructorStrategy$Default.extractConstructors(ConstructorStrategy.java:196)
at
net.bytebuddy.dynamic.scaffold.subclass.SubclassDynamicTypeBuilder.applyConstructorStrategy(SubclassDynamicTypeBuilder.java:253)
at
net.bytebuddy.dynamic.scaffold.subclass.SubclassDynamicTypeBuilder.toTypeWriter(SubclassDynamicTypeBuilder.java:222)
at
net.bytebuddy.dynamic.scaffold.subclass.SubclassDynamicTypeBuilder.toTypeWriter(SubclassDynamicTypeBuilder.java:213)
at
net.bytebuddy.dynamic.DynamicType$Builder$AbstractBase$UsingTypeWriter.make(DynamicType.java:4085)
at
net.bytebuddy.dynamic.DynamicType$Builder$AbstractBase.make(DynamicType.java:3769)
at
net.bytebuddy.dynamic.DynamicType$Builder$AbstractBase$Delegator.make(DynamicType.java:4021)
at
org.mockito.internal.creation.bytebuddy.SubclassBytecodeGenerator.mockClass(SubclassBytecodeGenerator.java:282)
at
org.mockito.internal.creation.bytebuddy.TypeCachingBytecodeGenerator.lambda$mockClass$0(TypeCachingBytecodeGenerator.java:78)
at net.bytebuddy.TypeCache.findOrInsert(TypeCache.java:168)
... 24 more
```
```
❯ java -version
openjdk version "25.0.1" 2025-10-21 LTS
OpenJDK Runtime Environment Temurin-25.0.1+8 (build 25.0.1+8-LTS)
OpenJDK 64-Bit Server VM Temurin-25.0.1+8 (build 25.0.1+8-LTS, mixed mode,
sharing)
```
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