Open Existing Presentation in Aspose.Slides vs pptx4j

Aspose.Slides - Open Existing Presentation

Using Aspose.Slides for Java, developers can not only create PowerPoint presentations from scratch but also access or modify the existing ones.

Java

 //Instantiate Presentation class that represents PPTX file

Presentation pres = new Presentation(dataDir + "presentation.pptx");

// Save presentation with chart

pres.save(dataDir + "Aspose-Duplicate.pptx", SaveFormat.Pptx);

pptx4j - Open Existing Presentation

Below example shows how existing presentation can be opened and then saved after any kind of modifications using pptx4j.

Java

 String inputfilepath = dataDir + "presentation.pptx";

PresentationMLPackage presentationMLPackage =

	(PresentationMLPackage)OpcPackage.load(new java.io.File(inputfilepath));

System.out.println("\n\n saving .. \n\n");

presentationMLPackage.save(new java.io.File(dataDir + "Pptx4j-Duplicate.pptx"));

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Hello World Presentation in Aspose.Slides vs pptx4j