<repository>
    <id>repository.groupdocs.cloud</id>
    <name>repository.groupdocs.cloud</name>
    <url>https://releases.groupdocs.cloud/java/repo/</url>
</repository>

mvn clean install

mvn clean deploy

<dependency>
    <groupId>com.groupdocs</groupId>
    <artifactId>groupdocs-merger-cloud</artifactId>
    <version>22.5</version>
</dependency>

mvn clean package

// For complete examples and data files, please go to https://github.com/groupdocs-merger-cloud/groupdocs-merger-cloud-java-samples
String MyClientSecret = ""; // Get ClientId and ClientSecret from https://dashboard.groupdocs.cloud
String MyClientId = ""; // Get ClientId and ClientSecret from https://dashboard.groupdocs.cloud

Configuration configuration = new Configuration(MyClientId, MyClientSecret);
DocumentApi apiInstance = new DocumentApi(configuration);

try {
    FileInfo fileInfo1 = new FileInfo();   
    fileInfo1.setFilePath("Pdf/one-page-password.pdf");
    fileInfo1.setPassword("password");
    JoinItem item1 = new JoinItem();
    item1.setFileInfo(fileInfo1);

    FileInfo fileInfo2 = new FileInfo();   
    fileInfo2.setFilePath("WordProcessing/one-page.docx");
    JoinItem item2 = new JoinItem();
    item2.setFileInfo(fileInfo2);

    JoinOptions options = new JoinOptions();
    options.setJoinItems(Arrays.asList(item1, item2));
    options.setOutputPath("output/joined.pdf");

    JoinRequest request = new JoinRequest(options);

    DocumentResult response = apiInstance.join(request);

    System.err.println("Output file path: " + response.getPath());

} catch (ApiException e) {

    System.err.println("Exception while calling api:");
    e.printStackTrace();
}