{{< blocks/products/cells/cells-cloud-banner h1="Convert XLSX to XLS" h2="Java library for converting XLSX to XLS" p="Use the Conversion API of of Cells Cloud to create customized spreadsheet workflows in Java projects. This is a professional solution to convert XLSX to XLS and other document formats online using Java." urlsection="conversion/xlsx-to-xls/" >}}

{{< blocks/products/cells/cells-cloud-section  title="Convert XLSX to XLS using Cells Cloud SDK for Java" >}}
{{% blocks/products/cells/cells-cloud-api-reference  apiurl=https://api.aspose.cloud/v4.0/cells/convert/spreadsheet/  apireferenceurl=https://reference.aspose.cloud/cells/?urls.primaryName=API+v4#/Conversion/ConvertSpreadsheet  apimethod=PUT %}}
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Converting file formats from XLSX to XLS can be a complex task. Our Java SDK handles all XLSX to XLS format conversions while preserving the main structural and logical content of the source XLSX spreadsheet. Our Java library provides a professional solution for converting XLSX to XLS files online. This Cloud SDK empowers Java developers with powerful functionality and ensures high-quality XLS output.

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{{% blocks/products/cells/cells-cloud-noreplacecode title="Java Code Example for converting XLSX to XLS using Cells Cloud SDK" gistPath="" %}}
 
```java
// For complete examples and data files, please go to https://github.com/aspose-cells-cloud/aspose-cells-cloud-java/
    package com.aspose.cloud.cells.api;
	import com.aspose.cloud.cells.api.CellsApi;
	import com.aspose.cloud.cells.request.*;
	public class ConvertSpreadsheetExample {
        public static void main(String[] args) {
            try {
                CellsApi api = new CellsApi(System.getenv("ProductClientId"), System.getenv("ProductClientSecret"));
                ConvertSpreadsheetRequest request = new ConvertSpreadsheetRequest();
                request.setSpreadsheet("EmployeeSalesSummary.xlsx");
                request.setFormat("xls");
                api.convertSpreadsheet(request);
            } catch (ApiException e) {
                e.printStackTrace();
            }
        }
    }
```
 
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{{< blocks/products/cells/cells-cloud-section-list isGrey="true"  title="How to convert XLSX to XLS using the Cells Cloud Java library." >}}
<li>Register an account at <a href="https://dashboard.aspose.cloud/">Dashboard</a> to get free API quota & authorization details</li>
<li>Install Java library and add the reference (import the library) to your project.</li>
<li>Open the source file in Java.</li>
<li>Use the `putConvertWorkbook` method to retrieve the resulting stream.</li>
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{{< blocks/products/cells/cells-cloud-section-list isGrey="true"  title="System Requirements" >}}
<li>Maven 2.2.0 or newer</li>
<li>Java(TM) SE Runtime Environment</li>
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