This short guide explains how to create Gantt chart in Excel using Java. It has details to set the IDE, a list of steps, and a sample code to construct a Gantt chart using Java. You will get the information to create sample tasks and generate the Gantt chart without the need for any external data source.

Steps to Create Gantt Diagram using Java

1. Set the environment to use Aspose.Cells for Java to create a Gantt chart
2. Load the Aspose.Cells license to enable the full features of the product
3. Create a workbook and change the name of the first worksheet
4. Define the task list and set the names, start dates, and finish dates
5. Write the table headers and set the baseline with the earliest task start
6. Fill each row with task data, calculated start offsets and durations
7. Set the format for the start/finish date columns and auto‑fit the columns in the table
8. Add a stacked bar chart and bind the task names, offsets, and durations with it
9. Set the offset series view off, set style for the task bars and plot area, and save the file

The above steps summarize how to build a Gantt chart in Excel using Java. Create a workbook, add a sheet, set tasks with start and finish dates, calculate the offsets and durations, and format the dates for clear visualization. Finally, create a stacked bar chart from the built ranges for viewing the Gantt timeline and save the workbook.

Code to Develop Gantt Chart in Excel using Java

The above code demonstrates the development of a Gantt chart generator using Java. You can freeze the header row and create a table with predefined styles for the tasks to make the data more readable during scrolling. Also, dynamically set the color of the bars based on the task duration or status, and export the chart to an image or PDF for easy sharing for other tools.

This article has taught us the process to create a Gantt chart. To create a Stock chart, refer to the article Create Stock Chart in Excel Using Java.