尝试在 IntelliJ Idea 中运行 Kotlin 项目但出现错误错误

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I am trying to start learning Kotlin, and I have installed IntelliJ Idea from JetBrains, I really like the layout of the IDE, and so I don't really want to change it.

Whenever I try to run the program, I get the following error:

Could not open init generic class cache for initialization script 'C:\Users\Jacob\AppData\Local\Temp\wrapper_init1.gradle' (C:\Users\Jacob\.gradle\caches\6.6.1\scripts\9x7j38tmeo1ohlyu8452ntfdm).
> BUG! exception in phase 'semantic analysis' in source unit '_BuildScript_' Unsupported class file major version 60

I know it's not the code, and since I am not very familiar with IntelliJ Idea or Kotlin, I have no idea where to start looking for the error or where to fix it...

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Someone said that this question's answers were the solution, but I looked their, tried what it shows, but still found now solution for my situation... When I follow what they say, I get the same error.

Someone please help!!!

Answer 1

I created instruction:

• Install JDK (for example Oracle JDK 14 )

• Open project folder with build.gradle and settings.gradle in Idea

• Add JDK to project: press F4 on left Project Tool -> SDk -> Add -> Apply

  

• Set new SDK to project: press F4 on left Project Tool -> Project -> Project SDK -> Set new SDK -> OK

  

• Set new SDK to Gradle Build Tool : press Ctrl + Alt + S -> Find gradle in search -> Go to Gradle JVM -> Set new SDK -> OK

  

• Create new directory src/main/kotlin/main.kt with code

fun main() {
    val jdk = System.getProperty("java.version")
    println("Using JDK: $jdk")
}

• Go to main.kt in Editor and press Ctrl + Shift + F10 and you must see your JDK version in console like: Using JDK: 14.0.2

Take a look sample project