Remove empty rows from an excel file in Java

In this tutorial, we will learn how to remove empty rows from an excel file in Java with some easy methods.

Excel files are used for data storage, analysis, and sharing in various domains. Often, these files may contain empty rows that affect processing or analysis tasks. Additionally, removing these empty rows can streamline the dataset and also make it more efficient to work. Removing empty rows in Excel can be beneficial for several reasons, especially when it comes to data processing, analysis, and overall file management. Here are some key reasons to remove empty rows from an Excel file:

• Automation and Scripting
• Enhanced Readability
• Better Performance
• Data Integration

How to remove empty rows from an excel file in Java

Let us understand the concept in detail:

To remove blank rows in Excel using Java, get the IDE settings to establish the environment, prepare a list of programming steps, and create a ready-to-run sample code to delete empty lines in Excel using Java. Hence it will also introduce various options to customize the process of removing blank rows from the target Excel file.

Implementing code in Java to remove empty rows from an Excel file

import com.aspose.cells.*;

public class Main
{
    public static void main(String[] args) throws Exception // Remove empty rows
    {
        // Set the licenses
        new License().setLicense("License.lic");

        // Load an Excel file
        Workbook w = new Workbook("input.xlsx");

        // Access the sheets collection
        WorksheetCollection sheets = w.getWorksheets();

        // Access the target sheet
        Worksheet sheet = sheets.get(0);

        // Delete empty rows
        sheet.getCells().deleteBlankRows();

        // Save the modified Excel file
        w.save("output.xlsx");
        
        // Print confirmation message
        System.out.println("Blank rows removed successfully");
    }
}

Detailed explanation of code

1. Set Up the Environment:In order to execute the code ensure you have Java installed. Download and include the Aspose.Cells library in your project.
2. Load the Excel File:At present, the class is used to load the Excel file.
3. Access the Worksheet:This provides access to all sheets within the workbook.
4. Delete Empty Rows:After that the method removes all blank rows from the worksheet.
5. Save the Modified File:At last a modified workbook is saved to a new file.
6. Print Confirmation:As a result a message is printed to the console to indicate successful removal of blank rows.

Steps to Run the Program

1. Include Aspose.Cells Library:Firstly, download the Aspose.Cells JAR file from the Aspose website and add it to your project’s classpath. If using Maven, add the dependency .
2. License File:As shown above, place your Aspose.Cells license file in an accessible directory. Eventually, update the path in the code if necessary.
3. Input Excel File:At this point, place your input Excel file  in the directory where you are running the program or update the path in the code to point to its location.
4. Compile and Run:Compile the program using a Java compiler. Run the compiled program. At this instant it will load the input Excel file, remove any empty rows from the first sheet and finally save the modified file.
   

   Output