Evaluation Version Limitation

Evaluation version of Aspose.Slides (without a license specified) provides full product functionality, but (when you save your presentations) it injects an evaluation watermark at the center of each slide as shown in the figure below:


Setting a License

The license is a plain text XML file that contains details such as the product name, number of developers it is licensed to, subscription expiry date, and so on. The file is digitally signed, so do not modify the file. Even an inadvertent addition of an extra line break to the contents of the file will invalidate it.

To avoid the limitations associated with the evaluation version, you need to set a license before using Aspose.Slides. You are only required to set a license once per application or process.

The license can be loaded from a stream or file in the following locations:

  1. An explicit path.
  2. The folder containing Aspose.Slides.jar.

Use the License.setLicense method to license the component. The easiest way to set a license requires you to place the license file in the same folder as Aspose.Slides.jar and then specify the file name without its path as shown in the following example:

Example 1

In this example, Aspose.Slides will attempt to find the license file in the folder that contains the JARs of your application.

com.aspose.slides.License license = new com.aspose.slides.License();


Example 2

Initializes a license from a stream.

com.aspose.slides.License license = new com.aspose.slides.License();


Setting a License in PHP Using PHP/Java Bridge

Setting the license in PHP using PHP/Java Bridge is similar to Aspose.Slides for Java. For this reason, PHP developers actually use Aspose.Slides for Java API in PHP. PHP/Java Bridge provides an interface to the PHP developers that makes it possible to use Java classes in PHP syntax.

	 //Using aspose.slides.jar file so that the classes inside the jar file
	 //can be used

	   //Create a stream object containing the license file
	   $fistream=new Java("", "Aspose.Slides.Java.lic");

	   //Instantiate the License class
	   $license=new Java("com.aspose.slides.License");

	   //Set the license through the stream object

	   //Closing the stream
	 catch(JavaException $ex)
	   //Printing the exception, if it occurs
	   echo $ex->toString();

Validating a License

To check whether a license has been properly set, you can validate it. The License class has the isLicensed method that will return true if the license has been properly set.

License license = new License();

if (License.isLicensed()) 
    System.out.println("License is Set!");