GcExcel Java supports the following types of license:

• Evaluation License
• No-License
• Production License

Evaluation License

GcExcel Java trial license is available for one month for users to evaluate the product and see how it can help them with their comprehensive project requirements.

The evaluation version has an expired date that is determined when an evaluation key is generated. After users apply the evaluation license key, they can use the product before they reach the license expiry date. However, when saving an Excel or PDF file using the evaluation version, a watermark sheet will always be added specifying that this is an evaluation version and will provide sales and contact information in order to enable customers to purchase the license.

After the expired date, the following limitations will be triggered:

Cannot create new instance

When your evaluation license expires, an exception specifying that the evaluation license is expired will be thrown on creating a new object of the workbook class.

Open and Save Excel Files

• If a user opens an Excel file, an exception will be thrown saying that the evaluation license is expired.
• If a user saves a file, an Excel file with only the watermark sheet will be saved.

Save PDF Files

• If a user saves a PDF file, a PDF file with watermark on the top of each exported page will be saved.

API Limitations

The following API's will stop working after your evaluation license has expired:

API	Remark
IRange	Throws an exception, same as create an instance of Workbook.
IWorkbook.getWorksheets().add()	Returns null.

Watermark

When saving an Excel file, an Excel file with a watermark sheet will be saved. The content of watermark will tell users that no license is found and will provide our sales and contact information. When saving a PDF file, a PDF file with a watermark on the top of each exported page will be saved. The content of watermark will tell users which license is applied and will provide our sales and contact information.

In case you're using an evaluation license, the following watermark will appear:

"Powered by GrapeCity Documents for Excel, Java Edition EVALUATION VERSION. This version is not licensed to be used in a production environment. Visit https://www.grapecity.com or email us.sales@grapecity.com to purchase your license for distribution"

No License

No-License has a few limitations, that are highlighted below.

Maximum time of opening and saving Excel files

Every time a user runs an application, he/she can open or save up-to 100 Excel files using GcExcel Java.

• If user has opened 100 files, and trying to open the 101th file, exceptions will be thrown saying that you have exceeded the number of files you can open when license is not found.
• If user has saved 100 Excel files, and trying to save the 101th file, an Excel file with just a watermark sheet will be saved. The content of watermark tells users that no license is found.

Note that this limitation is triggered every time when users run the program, so that they can continue to open or save another 100 times after they restart their application.

Maximum Operating Time

While executing an application program, the duration of operating GcExcel Java will last up-to 10 hours.

Once you complete the 10 hours of operation, you may notice the following:

• An exception will be thrown while creating an instance of Workbook, saying that you have exceeded the maximum operating time, and cannot create a new instance.
• The following API's will stop working.
  

  API	Remark
  IRange	Throws an exception, same as create an instance of Workbook.
  IWorkbook.getWorksheets().add()	Returns null.

Note that this limitation will be reset every time when users run the program, so that they can continue to use the above APIs after they restart their program.

Watermark Sheet

When saving an Excel file, a new worksheet with watermark will be added. This sheet will be the active sheet of your workbook. The content of the watermark will tell users that no license is found and will provide our sales and contact information so that you can directly connect to our support team.

When saving a PDF file, a PDF file with a watermark on the top of each exported page will be added. The content of the watermark will tell users which license is applied and will provide our sales and contact information.

The following watermark will be displayed:

"Powered by GrapeCity Documents for Excel, Java Edition NON-LICENSED EVALUATION VERSION. This version is not licensed to be used in a production environment. Visit https://www.grapecity.com or email us.sales@grapecity.com to purchase your license for distribution".

Production License

GcExcel Java production license is issued at the time of purchase of the product. If you have production license, you can access all the features of GcExcel Java without any limitations.

Watermark Sheet

No watermark will be displayed when you have a production license.