@Preview doesn't support Java 19

[ShirasawaSama]

Versions

• Kotlin version*: 1.8.10
• Compose Multiplatform version*: 1.4.0-alpha01-dev991
• OS version(s)* (required for Desktop and iOS issues): Windows 10
• OS architecture (x86 or arm64): x86
• JDK (for desktop issues): liberica-19.0.2
• IDEA: IntelliJ IDEA 2023.1 (Ultimate Edition) - #IU-231.8109.175
• IDEA plugin: 1.3.1

Error

java.lang.reflect.InvocationTargetException
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:119)
	at java.base/java.lang.reflect.Method.invoke(Method.java:577)
	at org.jetbrains.compose.desktop.ui.tooling.preview.rpc.PreviewHost.renderFrame(RemotePreviewHost.kt:161)
	at org.jetbrains.compose.desktop.ui.tooling.preview.rpc.PreviewHost.renderFrame(RemotePreviewHost.kt:129)
	at org.jetbrains.compose.desktop.ui.tooling.preview.rpc.PreviewHost.access$renderFrame(RemotePreviewHost.kt:47)
	at org.jetbrains.compose.desktop.ui.tooling.preview.rpc.PreviewHost$senderThread$1.invoke(RemotePreviewHost.kt:63)
	at org.jetbrains.compose.desktop.ui.tooling.preview.rpc.PreviewHost$senderThread$1.invoke(RemotePreviewHost.kt:56)
	at kotlin.concurrent.ThreadsKt$thread$thread$1.run(Thread.kt:30)
Caused by: java.lang.UnsupportedClassVersionError: {MY_CLASS} has been compiled by a more recent version of the Java Runtime (class file version 63.0), this version of the Java Runtime only recognizes class file versions up to 62.0
	at java.base/java.lang.ClassLoader.defineClass1(Native Method)
	at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1013)
	at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:150)
	at java.base/java.net.URLClassLoader.defineClass(URLClassLoader.java:524)
	at java.base/java.net.URLClassLoader$1.run(URLClassLoader.java:427)
	at java.base/java.net.URLClassLoader$1.run(URLClassLoader.java:421)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:712)
	at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:420)
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:588)
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
	at java.base/java.lang.Class.forName0(Native Method)
	at java.base/java.lang.Class.forName(Class.java:383)
	at java.base/java.lang.Class.forName(Class.java:376)
	at androidx.compose.ui.tooling.ComposableInvoker.invokeComposable(ComposableInvoker.kt:196)
	at androidx.compose.desktop.ui.tooling.preview.runtime.NonInteractivePreviewFacade$Companion$render$1.invoke(NonInteractivePreviewFacade.kt:57)
	at androidx.compose.desktop.ui.tooling.preview.runtime.NonInteractivePreviewFacade$Companion$render$1.invoke(NonInteractivePreviewFacade.kt:53)
	at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:107)
	at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:34)
	at androidx.compose.runtime.CompositionLocalKt.CompositionLocalProvider(CompositionLocal.kt:228)
	at androidx.compose.ui.ComposeScene$setContent$5.invoke(ComposeScene.skiko.kt:375)
	at androidx.compose.ui.ComposeScene$setContent$5.invoke(ComposeScene.skiko.kt:374)
	at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:107)
	at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:34)
	at androidx.compose.runtime.CompositionLocalKt.CompositionLocalProvider(CompositionLocal.kt:228)
	at androidx.compose.ui.platform.CompositionLocalsKt.ProvideCommonCompositionLocals(CompositionLocals.kt:194)
	at androidx.compose.ui.platform.Wrapper_skikoKt$setContent$2$1.invoke(Wrapper.skiko.kt:47)
	at androidx.compose.ui.platform.Wrapper_skikoKt$setContent$2$1.invoke(Wrapper.skiko.kt:46)
	at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:107)
	at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:34)
	at androidx.compose.ui.platform.Wrapper_skikoKt.provide(Wrapper.skiko.kt:63)
	at androidx.compose.ui.platform.Wrapper_skikoKt.access$provide(Wrapper.skiko.kt:1)
	at androidx.compose.ui.platform.Wrapper_skikoKt$setContent$2.invoke(Wrapper.skiko.kt:46)
	at androidx.compose.ui.platform.Wrapper_skikoKt$setContent$2.invoke(Wrapper.skiko.kt:45)
	at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:107)
	at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:34)
	at androidx.compose.runtime.ActualJvm_jvmKt.invokeComposable(ActualJvm.jvm.kt:37)
	at androidx.compose.runtime.ComposerImpl$doCompose$2$5.invoke(Composer.kt:3353)
	at androidx.compose.runtime.ComposerImpl$doCompose$2$5.invoke(Composer.kt:3343)
	at androidx.compose.runtime.SnapshotStateKt__DerivedStateKt.observeDerivedStateRecalculations(DerivedState.kt:341)
	at androidx.compose.runtime.SnapshotStateKt.observeDerivedStateRecalculations(Unknown Source)
	at androidx.compose.runtime.ComposerImpl.doCompose(Composer.kt:3343)
	at androidx.compose.runtime.ComposerImpl.composeContent$runtime(Composer.kt:3278)
	at androidx.compose.runtime.CompositionImpl.composeContent(Composition.kt:587)
	at androidx.compose.runtime.Recomposer.composeInitial$runtime(Recomposer.kt:966)
	at androidx.compose.runtime.CompositionImpl.setContent(Composition.kt:519)
	at androidx.compose.ui.platform.Wrapper_skikoKt.setContent(Wrapper.skiko.kt:45)
	at androidx.compose.ui.ComposeScene.setContent$ui(ComposeScene.skiko.kt:371)
	at androidx.compose.ui.ComposeScene.setContent$ui$default(ComposeScene.skiko.kt:350)
	at androidx.compose.ui.ComposeScene.setContent(ComposeScene.skiko.kt:332)
	at androidx.compose.ui.ImageComposeScene.<init>(ImageComposeScene.skikoMain.kt:120)
	at androidx.compose.ui.ImageComposeScene.<init>(ImageComposeScene.skikoMain.kt:106)
	at androidx.compose.ui.ImageComposeScene_skikoMainKt.renderComposeScene(ImageComposeScene.skikoMain.kt:60)
	at androidx.compose.desktop.ui.tooling.preview.runtime.NonInteractivePreviewFacade$Companion.render(NonInteractivePreviewFacade.kt:53)
	at androidx.compose.desktop.ui.tooling.preview.runtime.NonInteractivePreviewFacade.render(NonInteractivePreviewFacade.kt)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
	... 7 more

[AlexeyTsvetkov]

@ShirasawaSama I was not able to reproduce the issue. How do you configure target bytecode level/JDK in your Gradle scripts?

[kvithayathil]

I got the same error - using the generated project from the KMP Wizard. When I updated all the jvm targets and toolchains to anything above Java Version 17, I'd encounter the similar errors with @Preview on desktop. Android previews do work however.

Setting the Java Version to 17 does allow desktop previews to work.