I had tried as you said.
1. I had click the "file" - "import" - "General" - "Existing Projects into Workspace".
2. select the root "Aspose_Cells_Java-master\Examples".
3. But, following error was occurs. 5 jar file is not exist.
(Please refer the 3.png image file.)
4. So, remove the broken jar at Java Builder Path of project.
(Please refer the 4.png image file.)
5. Add the 2 jar file of latest version(8.6.0)
(Please refer the 5.png image file.)
6. But, error was occurs....more error....
(Please refer the 6.png image file.)
Please let me know detailed step that how to running....