Migrate to Java 11 with gradle; UnsupportedOperationException

Question

Trying to switch from jdk 10 to 11 and cannot figure out what library invoke this exception:

Caused by: org.gradle.api.GradleException: failed to read class file ../../SomeTestFile.class
...
...
Caused by: java.lang.UnsupportedOperationException
        at org.objectweb.asm.ClassVisitor.visitNestMemberExperimental(ClassVisitor.java:248)
        at org.objectweb.asm.ClassReader.accept(ClassReader.java:651)
        at org.objectweb.asm.ClassReader.accept(ClassReader.java:391)
        at org.gradle.api.internal.tasks.testing.detection.AbstractTestFrameworkDetector.classVisitor(AbstractTestFrameworkDetector.java:124)

I'm using gradle wrapper(v4.10.2) with the following build.gradle:

buildscript {
    ext {
        springBootVersion = '2.0.5.RELEASE'
        schemaDownloadVersion = '1.6'
        generateAvroVersion = '0.14.2'
    }
    repositories {
        mavenCentral()
        maven { url "https://plugins.gradle.org/m2/" }
        maven { url "http://packages.confluent.io/maven/" }
    }
    dependencies {
        classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")
        classpath("gradle.plugin.com.amit.plugin.download-registry:registry-schema-download-plugin:${schemaDownloadVersion}")
        classpath("com.commercehub.gradle.plugin:gradle-avro-plugin:${generateAvroVersion}")
    }
}

apply plugin: 'java'
apply plugin: 'jacoco'
apply plugin: 'org.springframework.boot'
apply plugin: 'io.spring.dependency-management'
apply plugin: 'com.amit.plugin.download-registry'
apply plugin: 'com.commercehub.gradle.plugin.avro'

group = 'com.example'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = 11

repositories {
    mavenCentral()
}

ext {
    springCloudVersion = 'Finchley.RELEASE'
    jaxbVersion = '2.3.0'
    activationVersion = '1.1.1'
    jmockitVersion = '1.43'
    lombokVersion = '1.18.2'
}

jacoco {
    toolVersion = '0.8.2'
}

dependencies {
    compile('org.springframework.cloud:spring-cloud-starter-oauth2')
    compile("javax.xml.bind:jaxb-api:${jaxbVersion}")
    compile("com.sun.xml.bind:jaxb-core:${jaxbVersion}")
    compile("com.sun.xml.bind:jaxb-impl:${jaxbVersion}")
    compile("javax.activation:activation:${activationVersion}")
    compileOnly("org.projectlombok:lombok:${lombokVersion}")
    testCompile("org.jmockit:jmockit:${jmockitVersion}")
    testCompile('org.springframework.boot:spring-boot-starter-test') {
        exclude(group: 'org.mockito')
    }
}

dependencyManagement {
    imports {
        mavenBom "org.springframework.cloud:spring-cloud-dependencies:${springCloudVersion}"
    }
}

...

Investigating this problem I have figure out only that gradle itself, lombok and jmockit uses asm library which probably can cause this exception. Could someone answer me what library invoke this exception?

UPDATE

I have found that article about the same problem: https://matsumana.info/blog/2018/09/25/gradle-with-jdk11/ which point to the gradle issue here https://github.com/gradle/gradle/issues/5120 So it means gradle still not support Java 11 yet?

It looks like gradle still needs to update to the latest version of asm. I found a similar issue here: https://github.com/gradle/gradle/issues/7059 — Jorn Vernee, Oct 08 '18 at 11:59

Jorn Vernee · Accepted Answer · 2018-10-08T12:57:44.800

Java 11 added nest based access, so any byte code writing APIs like ASM had to be updated to support the class-file changes.

Looking at the source code for that method in the 6.2.1 version of ASM (which is the one that gradle seems to be using):

  @Deprecated
  public void visitNestMemberExperimental(final String nestMember) {
    if (api < Opcodes.ASM7_EXPERIMENTAL) {
      throw new UnsupportedOperationException();
    }
    if (cv != null) {
      cv.visitNestMemberExperimental(nestMember);
    }
  }

The API level required is 7 which is currently in beta. I guess they are waiting for a release version of ASM 7 before updating the dependency.

score 7 · Answer 2 · answered Oct 29 '18 at 19:20

7

ASM v7 has been released.

Gradle issue has been closed and fix is available at Gradle 5.0 RC1 or later.

Binaries should be soon available for download.

answered Oct 29 '18 at 19:20

Mikhail Kholodkov

23,642
17
61
78

1

Thank you for notification! Will check it – Viktor M. Oct 30 '18 at 08:22

score 5 · Answer 3 · answered Feb 17 '19 at 10:25

5

Gradle version 4.10.3 seems also to solve it.

answered Feb 17 '19 at 10:25

Horcrux7

23,758
21
98
156

score 1 · Answer 4 · answered Aug 04 '19 at 14:57

1

I faced this error. Because my gradle file was configured with 1.7 jdk and in project settings i was referring to 1.8 jdk. so i changed in gradle file to sourceCompatibility = 1.8 targetCompatibility = 1.8

answered Aug 04 '19 at 14:57

Rajesh B

11
2

Migrate to Java 11 with gradle; UnsupportedOperationException

4 Answers4