This tutorial shows how to PDF Java developers can easily add highlight annotations to a PDF document using the Aspose PDF Cloud REST API, with full control over colors, positions, and timestamps.
Prerequisite
- Create an account API credentials
- Download the Aspose.PDF Cloud SDK for Java
- Set up a Java project with the SDK to interact with Aspose Cloud storage
Steps to Highlight Text in PDF Document with Java Low Code API
- Configure the PdfApi class object by providing the API key and application SID for highlighting the text
- Create a HighlightAnnotation object by setting the rectangular area and color
- Set the creation and modified date of the annotation
- Upload the target PDF file to Cloud storage for highlighting the text
- Call the PostPageHighlightAnnotations() method by specifying the input file, page number, and annotations
- Download the PDF file after highlighting
These steps describe how to highlight a PDF with the Java Low Code API: instantiate a PdfApi, create a HighlightAnnotation with the desired rectangle and color, set its timestamps, upload the PDF, and finally invoke PostPageHighlightAnnotations() to apply the highlight.
Code to Highlight Text in PDF with Java REST Interface
The sample demonstrates how to highlight PDF documents via the Java REST interface, allowing you to set attributes such as unique ID, contents, Z‑index, alignment, and subject, as well as proper creation and modification dates for a smooth API call.
To learn how to add other annotation types, see the article on Add Checkbox in PDF with Java REST API.
For more information about supported file formats, visit the PDF file format page.
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