如何解决无法在IntelliJ中运行java 11示例程序？

 

public class First {
  public static void main(String[] args) {
    System.out.println("Hello Java 11");
  }
}

我试图用intellij在Java 11中运行上面的程序，但是低于错误

Information:javac 11 was used to compile java sources
Information:Internal caches are corrupted or have outdated format, forcing project rebuild: Module 'eleven-lab' production: java.net.MalformedURLException: unknown protocol: jrt
Information:25/09/18, 6:58 PM - Compilation completed with 1 error and 0 warnings in 4s 516ms
Error:Internal error: (java.net.MalformedURLException) unknown protocol: jrt
java.net.MalformedURLException: unknown protocol: jrt
    at java.net.URL.(URL.java:421)
    at java.net.URL.(URL.java:310)
    at java.net.URL.(URL.java:333)
    at com.intellij.compiler.instrumentation.InstrumentationClassFinder.createJDKPlatformUrl(InstrumentationClassFinder.java:61)
    at org.jetbrains.jps.incremental.instrumentation.ClassProcessingBuilder.createInstrumentationClassFinder(ClassProcessingBuilder.java:125)
    at org.jetbrains.jps.incremental.instrumentation.ClassProcessingBuilder.build(ClassProcessingBuilder.java:93)
    at org.jetbrains.jps.incremental.IncProjectBuilder.runModuleLevelBuilders(IncProjectBuilder.java:1246)
    at org.jetbrains.jps.incremental.IncProjectBuilder.runBuildersForChunk(IncProjectBuilder.java:923)
    at org.jetbrains.jps.incremental.IncProjectBuilder.buildTargetsChunk(IncProjectBuilder.java:995)
    at org.jetbrains.jps.incremental.IncProjectBuilder.buildChunkIfAffected(IncProjectBuilder.java:886)
    at org.jetbrains.jps.incremental.IncProjectBuilder.buildChunks(IncProjectBuilder.java:719)
    at org.jetbrains.jps.incremental.IncProjectBuilder.runBuild(IncProjectBuilder.java:371)
    at org.jetbrains.jps.incremental.IncProjectBuilder.build(IncProjectBuilder.java:178)
    at org.jetbrains.jps.cmdline.BuildRunner.runBuild(BuildRunner.java:138)
    at org.jetbrains.jps.cmdline.BuildSession.runBuild(BuildSession.java:308)
    at org.jetbrains.jps.cmdline.BuildSession.run(BuildSession.java:138)
    at org.jetbrains.jps.cmdline.BuildMain$MyMessageHandler.lambda$channelRead0$0(BuildMain.java:235)
    at org.jetbrains.jps.service.impl.SharedThreadPoolImpl.lambda$executeOnPooledThread$0(SharedThreadPoolImpl.java:42)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)
Please perform full project rebuild (Build | Rebuild Project)

问题在于正在处理的特定项目的语言级别。运行的是旧版本的IntelliJ。如果是这样，需要先更新它。更新后需要安装Java 11 jdk（如果尚未安装），然后打开项目并通过以下方式更改语言级别：

• 右键单击项目>打开模块设置[F4]>选择11作为“语言级别”

如果将完全使用Java 11，还可以通过以下方式更改默认语言级别：

• 单击文件>其他设置>新项目的结构>项目语言级别> 11（如果idea版本低的话就没有11，需要下载最新版）

 原文：https://cloud.tencent.com/developer/ask/193587