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If the error indicates the Maven repository issue, such as the Failed to update Maven indices error, try to check if Maven repositories were indexed correctly. Also, make sure there are no other IP addresses mapped to localhost. Try to have 127.0.0.1 localhost in the etc/hosts file.

On some systems you need to edit the hosts file so that localhost resolves correctly. If you received the Operation timed out error or IDE connection failure to the Maven process, try to edit the hosts file. If you need to use more heap, switch to 64-bit Java and specify the same 64-bit JVM for Maven JDK for importer. On the Importing page, in the VM options for importer field, increase heap size for the Maven importer.Īlso, in the JDK for importer field, increase IDE heap size. You can click the icon in the Maven tool window to open the Maven settings. In the Settings/Preferences dialog ( Ctrl+Alt+S), go to Build, Execution, Deployment | Build Tools | Maven | Importing. If you received the OutOfMemory error, try to increase the heap size for the Maven importer.

To fix issues that are related to the Maven projects that won't start or import, you can perform one of the following actions. How to fix problems with Maven projects that won't start Open Project Structure dialog and select Project from the options on the left.Ĭheck the source language level for your project.Ĭheck the source language level for each module (click the Sources tab). Check the language level in the project structure If you have imported a multi-level project, you can check project structure settings for source language level configuration.

On the page that opens, check if Project bytecode version and Target bytecode version match, or leave the Target bytecode version option blank so it can be determined from JDK. In the Settings/Preferences dialog ( Ctrl+Alt+S), go to Build, Execution, Deployment | Compiler | Java Compiler. So, now after this project is imported the language level should be picked up.Ĭheck the Java compiler settings to see if the bytecode versions match. Note that the configurations specified in your POM overrides any configurations specified in your project structure.