Tools to detect duplicated code (Java) [closed]

I use the following tools:

• PMD/CPD (BSD-style License).
• Checkstyle (LGPL License) – support was removed, see details.

Both tools have code duplication detection support. But both of them lack the ability to advise you how to refactor your code.

JetBrains IntelliJ IDEA Ultimate has good static code analysis with code duplication support, but it is not free.