IntelliJ gives Fatal Error: Unable to find package java.lang in classpath or bootclasspath

Question

When I try to make a simple module in IntelliJ it responds with:

Fatal Error: Unable to find package java.lang in classpath or bootclasspath

Answer 1

In Intellij Community 2019.1, this is what I did to solve the issue

• Project Structure > Platform Settings > SDKs
• Removed all existing SDKs listed ( I had multiple SDK listed there)
• Add the required SDK only and Apply