HTML CSS Selectors Java

CSS selectors are used to process specific elements in an HTML document. This article covers different examples of CSS Selectors like QuerySelector and QuerySelectorAll to update first instance of an element or all of the instances of an element programmatically in Java.

Use CSS Selectors in HTML - Java API Installation

Aspose.HTML for Java API supports manipulating or converting HTML, MHTML, SVG and other file formats. You can quickly set it up by downloading the JAR files from the New Releases section, or using the following details in the pom.xml file on your end. This will enable the API from Aspose Repository into your project:

Repository:

 <repositories>
     <repository>
         <id>snapshots</id>
         <name>repo</name>
         <url>http://repository.aspose.com/repo/</url>
     </repository>
</repositories>

Dependency:

 <dependencies>
    <dependency>
        <groupId>com.aspose</groupId>
        <artifactId>aspose-html</artifactId>
        <version>22.9</version>
        <classifier>jdk18</classifier>
    </dependency>
</dependencies>

Use CSS Selector QuerySelector in Java

The following steps demonstrate how to use CSS selector QuerySelector in Java:

  1. Load the input HTML with the HTMLDocument class.
  2. Create a CSS Selector that extracts the first paragraph element.
  3. Print content of the first paragraph.
  4. Set style attribute with properties for the selected element.
  5. Save the output HTML document.

The code snippet below explains how to use CSS selector QuerySelector in Java:

Work with QuerySelectorAll CSS Selector in HTML using Java

You need to follow the steps below to process elements using the QuerySelectorAll CSS selector in Java:

  1. Prepare an HTML code.
  2. Initialize a document using the HTMLDocument class.
  3. Create a CSS Selector that extract all matching elements in the document.
  4. Iterate over the resulted list of elements and process them.

The code sample below is an example of how to work with QuerySelectorAll CSS Selector programmatically using Java:

Explore Aspose.HTML for Java

You may take a look at different sections under the [documentation][7] space which explain how to utilize the features offered by the API.

Conclusion

In conclusion, you have learned how to work with different CSS selectors like QuerySelector and QuerySelectorAll programmatically in Java. You can iterate through different elements that meet the selection criteria based on your requirements. In case you want to discuss any of your queries, please write to us at forum.

See Also