To dive into the code as fast as possible GroupDocs provides different plans for purchase or offers a Free Trial and a 30-day Temporary License for evaluation.
Note
Note that there are a number of general policies and practices that guide you on how to evaluate, properly license, and purchase our products. You can find them in the “Purchase Policies and FAQ” section.
Free Trial or Temporary License
You can try GroupDocs.Viewer without buying a license.
Free Trial
The evaluation version is the same as the purchased one – the evaluation version simply becomes licensed when you set the license. You can set the license in a number of ways that described in the next sections of this article.
The evaluation version comes with the limitations:
Only first 2 pages can be rendered.
Trial badges are placed in the rendering results on the top of each page.
Temporary License
If you wish to test GroupDocs.Viewer without the limitations of the trial version, you can also request a 30-day Temporary License. For more details, see the “Get a Temporary License” page.
After the license is obtained you need to set the license. This section describes options of how this can be done, and also comments on some common questions.
The license should be set:
Only once per application domain,
and before using any other GroupDocs.Viewer classes.
The license can be set multiple times per app domain but we recommend doing it once since all calls to SetLicense except first will just waste processor time.
Set License from File
The following code sets a license from file.
StringlicensePath="path to the .lic file";Licenselicense=newLicense();license.setLicense(licensePath);
Set License from Stream
The following example shows how to set a license from a stream.
StringlicensePath="path to the .lic file";try(InputStreamfileStream=newFileInputStream(licensePath)){Licenselicense=newLicense();license.setLicense(fileStream);}
Set Metered License
You can also set Metered license as an alternative to license file. It is a new licensing mechanism that will be used along with existing licensing method. It is useful for the customers who want to be billed based on the usage of the API features. For more details, please refer to Metered Licensing FAQ section.
Following is the sample code demonstrating how to use Metered licensing.
// For complete examples and data files, please go to https://github.com/groupdocs-viewer/GroupDocs.Viewer-for-JavaStringpublicKey="";// Your public license keyStringprivateKey="";// Your private license keyMeteredmetered=newMetered();metered.setMeteredKey(publicKey,privateKey);// Get amount (MB) consumeddoubleamountConsumed=Metered.getConsumptionQuantity();System.out.println("Amount (MB) consumed: "+amountConsumed);// Get count of credits consumeddoublecreditsConsumed=Metered.getConsumptionCredit();System.out.println("Credits consumed: "+creditsConsumed);
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