Eclipse: Syntax Error, parameterized types are only if source level is 1.5

Question

I try to use the following code:

ArrayList
Map

Eclipse complains about both of them: Syntax Error, para

Answer 1

I was able to solve this in Eclipse Helios by right-clicking on the project, picking "Java Build Path", "Add Library...", "JRE System Library", "Workspace default JRE (jdk1.6.0_17)" and finally "Finish".