# Gradlew java/lang/NoClassDefFoundError: **URL:** \ **Category:** Gatling (Open-Source)\ **Created:** [January 20, 2021, 8:25pm UTC](https://community.gatling.io/t/gradlew-java-lang-noclassdeffounderror/5964 "2021-01-20T20:25:17Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![GIRISH\_K\_S](https://avatars.discourse-cdn.com/v4/letter/g/34f0e0/32.png) [@GIRISH\_K\_S](https://community.gatling.io/u/GIRISH_K_S)\ **Post date:** [January 20, 2021, 8:25pm UTC](https://community.gatling.io/t/gradlew-java-lang-noclassdeffounderror/5964/1 "2021-01-20T20:25:17Z")
I just cloned the [GitHub - gatling/gatling-gradle-plugin-demo: Showcase of the Gatling Plugin for Gradle](https://github.com/gatling/gatling-gradle-plugin-demo.git). when i open and run the project in Intellij using the following command: > **[GitHub - gatling/gatling-gradle-plugin-demo: Showcase of the Gatling Plugin...](https://github.com/gatling/gatling-gradle-plugin-demo)** > > Showcase of the Gatling Plugin for Gradle. Contribute to gatling/gatling-gradle-plugin-demo development by creating an account on GitHub. I get following error: Picked up JAVA\_TOOL\_OPTIONS: -agentlib:jvmhook Picked up \_JAVA\_OPTIONS: -Xrunjvmhook -Xbootclasspath/a:“C:\Program Files (x86)\Micro Focus\Unified Functional Testing\bin\java\_shared\classes\jasmine.jar” > Task :gatlingRun-computerdatabase.BasicSimulation FAILED > Error occurred during initialization of VM > java/lang/NoClassDefFoundError: java/lang/Object > Picked up JAVA\_TOOL\_OPTIONS: -agentlib:jvmhook > Picked up \_JAVA\_OPTIONS: -Xrunjvmhook -Xbootclasspath/a:“C:\Program Files (x86)\Micro Focus\Unified Functional Testing\bin\java\_shared\classes\jasmine.jar” FAILURE: Build failed with an exception. - What went wrong: Execution failed for task ‘:gatlingRun-computerdatabase.BasicSimulation’. > There’re failed simulations: computerdatabase.BasicSimulation - Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights. - Get more help at [https://help.gradle.org](https://help.gradle.org) Deprecated Gradle features were used in this build, making it incompatible with Gradle 7.0. Use ‘–warning-mode all’ to show the individual deprecation warnings. See [Command-Line Interface](https://docs.gradle.org/6.6.1/userguide/command_line_interface.html#sec:command_line_warnings) BUILD FAILED in 9s 4 actionable tasks: 4 executed Picked up JAVA\_TOOL\_OPTIONS: -agentlib:jvmhook Thanks, Girish ---
**Author:** ![slandelle](https://dub1.discourse-cdn.com/flex013/user_avatar/community.gatling.io/slandelle/32/4_2.png) [@slandelle](https://community.gatling.io/u/slandelle)\ **Post date:** [January 20, 2021, 8:40pm UTC](https://community.gatling.io/t/gradlew-java-lang-noclassdeffounderror/5964/2 "2021-01-20T20:40:17Z")
It looks like your Java installation is completely broken. From a quick search, it looks like this is caused by a product from Micro Focus: [https://stackoverflow.com/questions/10324186/error-message-in-trying-to-run-java](https://stackoverflow.com/questions/10324186/error-message-in-trying-to-run-java) I recommend you install [a proper standard JDK](https://adoptopenjdk.net/) that is not tampered by a third party vendor (then check your PATH to make sure you have the correct one). ---
**Author:** ![GIRISH\_K\_S](https://avatars.discourse-cdn.com/v4/letter/g/34f0e0/32.png) [@GIRISH\_K\_S](https://community.gatling.io/u/GIRISH_K_S)\ **Post date:** [January 20, 2021, 9:15pm UTC](https://community.gatling.io/t/gradlew-java-lang-noclassdeffounderror/5964/3 "2021-01-20T21:15:56Z")
Thanks that helped resolve the issue. But i still keep getting this warning Deprecated Gradle features were used in this build, making it incompatible with Gradle 7.0. Use ‘–warning-mode all’ to show the individual deprecation warnings. See [https://docs.gradle.org/6.6.1/userguide/command\_line\_interface.html#sec:command\_line\_warnings](https://docs.gradle.org/6.6.1/userguide/command_line_interface.html#sec:command_line_warnings) I have to use gradlew Clean the run the command : gradlew gatlingRun-computerdatabase.BasicSimulation for it to work. Thanks, Girish ---
**Author:** ![slandelle](https://dub1.discourse-cdn.com/flex013/user_avatar/community.gatling.io/slandelle/32/4_2.png) [@slandelle](https://community.gatling.io/u/slandelle)\ **Post date:** [January 20, 2021, 9:25pm UTC](https://community.gatling.io/t/gradlew-java-lang-noclassdeffounderror/5964/4 "2021-01-20T21:25:59Z")
warnings are warnings, not errors ---
**Author:** ![GIRISH\_K\_S](https://avatars.discourse-cdn.com/v4/letter/g/34f0e0/32.png) [@GIRISH\_K\_S](https://community.gatling.io/u/GIRISH_K_S)\ **Post date:** [January 20, 2021, 9:28pm UTC](https://community.gatling.io/t/gradlew-java-lang-noclassdeffounderror/5964/5 "2021-01-20T21:28:17Z")
But it does not run the simulation. it just returns warning. I need to do a gradle clean for simulation to run.