Why Aren’t There Any Operations to Choose from in Reverse Engineering of Sequence Diagram?
What you need to do to reverse engineer UML sequence diagram from Java code is to select the source folder first, and then pick-up an operation from the identified classes. Visual Paradigm will form a sequence diagram by analyzing the operation you selected. A frequently asked question about this process is “Why aren’t there any operations?” We are going to answer you why in this article.
Problem Description
To perform reverse engineering of sequence diagram, you first select Tools > Code > Instant Reverse Java to Sequence Diagram… from the toolbar. Then, you’ll see this window:
Instant Reverse window
You add the source folder, select a .java file and then click Next.
Selecting class
Now, you see the screen below and you find no operations available for selection. For this reason, you cannot proceed with reverse engineering.
No operations listed
Cause of Problem and Solution
The problem is due to a wrong selection of source folder.
Source folder is the root folder in which the *.java files (or the packages) are stored. Source folder is NEITHER the projects directory nor the project folder (unless you store the source files directly under the project folder). Usually, when you work with a project, there should be a folder named like src or source for storing the source code. That folder is what you need to select. A wrong selection of source folder will make it impossible for Visual Paradigm to analyze the code content properly, thus making it unable to recognize the operations in the selected class, which lead to no operations being listed eventually.
So the solution is simple. Run again the reverse engineering process. In the source folder selection screen, add the right source folder. Select the desired class and click Next. Then, you will see the operations listed. Select the desired operation and continue. A sequence diagram will then be formed.
Selecting operation for reversal
Related Know-how |
Related Link |
It did not work for me until I removed the first line of each java file, which is the package line.
Hi Cuipenfei,
Sorry to know about this. Could you send us your source file for diagnosis? You can contact our support team at:
https://www.visual-paradigm.com/support/
thank you ,i have the same thing , i have to remove the package line on each file to get the operation
and there is another problem every class has to be directly below src folder , in my opinion it’s terrible , i have many package in my program , do i have to move all my classes iun one folder !!!!!
hi
i am not get the operations i tried your post and also remove the package line but issue not solved.
please help me out.
thanks in advance.