Change Array Items in XMP using Java

Introduction

Welcome to our comprehensive guide on changing array items in XMP using Aspose.Page for Java! Aspose.Page is a powerful Java library that allows you to work with XMP metadata in EPS files seamlessly. In this tutorial, we’ll walk you through the process of modifying array items within XMP metadata, helping you enhance and customize your EPS documents.

Prerequisites

Before we dive into the tutorial, make sure you have the following prerequisites in place:

• Java Development Kit (JDK) installed on your system.
• Aspose.Page library for Java. You can download it from here.

Import Packages

To get started, let’s import the necessary packages in your Java project. Ensure you have the Aspose.Page library included in your project.

import java.io.FileInputStream;
import java.io.FileOutputStream;
import com.aspose.eps.PsDocument;
import com.aspose.eps.xmp.XmpMetadata;
import com.aspose.eps.xmp.XmpValue;
import com.aspose.page.BaseExamplesTest;

Step 1: Get XMP Metadata

Firstly, retrieve the XMP metadata from your EPS file. If the EPS file doesn’t already contain XMP metadata, a new one will be created with values from PS metadata comments such as %%Creator, %%CreateDate, %%Title, etc.

// The path to the documents directory.
String dataDir = "Your Document Directory";
// Initialize input EPS file stream
FileInputStream psStream = new FileInputStream(dataDir + "xmp3.eps");
PsDocument document = new PsDocument(psStream);
// Get XMP metadata. If EPS file doesn't contain XMP metadata, a new one will be filled with values from PS metadata comments.
XmpMetadata xmp = document.getXmpMetadata();

Step 2: Set “dc:title” Array Item

Now, let’s set the “dc:title” array item at index 0 with a new value.

// Set "dc:title" array item by index 0 
xmp.setArrayItem("dc:title", 0, new XmpValue("NewTitle"));

Step 3: Set “dc:creator” Array Item

Similarly, set the “dc:creator” array item at index 0 with a new creator value.

// Set "dc:creator" array item by index 0
xmp.setArrayItem("dc:creator", 0, new XmpValue("NewCreator"));

Step 4: Initialize Output EPS File Stream

Prepare the output EPS file stream where the modified document will be saved.

// Initialize output EPS file stream
FileOutputStream outPsStream = new FileOutputStream(dataDir + "xmp3_changed.eps");

Step 5: Save Document with Changed XMP Metadata

Save the document with the updated XMP metadata.

// Save document with changed XMP metadata
try {
    document.save(outPsStream);
} finally {
    outPsStream.close();
}

Conclusion

Congratulations! You’ve successfully learned how to change array items in XMP using Aspose.Page for Java. This tutorial provided step-by-step guidance, ensuring you can effortlessly enhance your EPS documents with customized metadata.

FAQs

Can I use Aspose.Page for Java with other programming languages?

Aspose.Page is primarily designed for Java, but Aspose provides similar libraries for other languages.

Where can I find detailed documentation for Aspose.Page for Java?

The documentation is available here.

Is there a free trial available for Aspose.Page for Java?

Yes, you can get a free trial here.

How can I obtain a temporary license for Aspose.Page for Java?

You can get a temporary license here.

Where can I purchase the full version of Aspose.Page for Java?

You can buy the full version here.