将Intellij Idea编译器语言级别设置为1.3

Question

I'm using Intellij Idea 15.0.1 and have a Java project, it imports class of default package from the class of a named package.

Since it is allowed only in Java 1.3, I've set JDK 1.3 everywhere:
- Project Settings
- IDE Settings - Java Compiler
- Edit Configurations (Application)

But still when I make project it stops with "Cannot resolve symbol" error. Also making starts with the message:

Information:Using javac 1.8.0_51 to compile java sources

Why Idea still uses javac 1.8 and how to set java 1.3 for the whole project, including syntax highlight?

Answer 1

You need to install JDK 1.3, configure it in Project Structure | SDKs and select it as the project SDK in Project Structure | Project.