Gang of Four Design Patterns Instructions for Eclipse Goto 'File' -> 'Import' -> 'General' -> 'Projects from Folder or Archive'. Select the root folder of the repository located in your system from project explorer window. Click on 'Project' Tab -> 'Build Project'. On build completion, go to 'Project Explorer' Go to the directory 'gof' (root folder of repository) -> 'src' -> 'test' -> 'java' -> 'guru' -> 'springframework' -> 'gof' Go to the pattern directory that you want to test, select the java file and run. Follow the comments for the explanation of the concept.