In a antecedent tutorial, you learnt how to accomplish a Microsoft Excel XLSX files in Java. Today, you are activity to apprentice how to apprehend Microsoft Excel XLSX files in a Java application.
For that, we are activity to use the abundant Apache POI API accessible aloof there : https://poi.apache.org/download.html
Note that you can watch this tutorial as a video on YouTube :
First footfall is to add Apache POI as a Maven annex in the body book of our Java project :
We accept called to apprehend Excel XLSX files in that tutorial but the argumentation is the aforementioned to apprehend Excel XLS earlier book format. So, we accept added both dependencies in our Maven POM but aloof the poi-ooxml is bare for our example.
First, we charge to amount Excel XLSX book to read. Our book will be called contacts.xlsx and it will accommodate the abstracts accounting in our antecedent tutorial acquirements you how to accomplish Excel XLSX files in Java.
So, we actualize a Book article with the name of the book in constant and then, we actualize FileInputStream instance for this file. This FileInputStream instance will be anesthetized in constant of the XSSFWorkbook article during its creation. The XSSFWorbook is the basis article clay an Excel XLSX book in the Apache POI Library.
It gives us the afterward cipher to amount the file :
Now, we are account the abstracts of the Excel XLSX file. First, we get the aboriginal area in the XSSFWorkbook by calling the getSheetAt adjustment of the XSSFWorkbook instance created previously.
Then, we get an iterator to iterate on the rows of this sheet. Note that a area is represented by a XSSFSheet article in the API. To iterate on anniversary rows of our sheet, we charge to use the Iterator article we got like accepted in Java.
In the aforementioned way, for anniversary row, we are activity to iterate on anniversary cell. For that we alarm the cellIterator adjustment of the accepted Row article instance. And we iterate on the Corpuscle altar of the accepted Row instance. For anniversary cell, we get the amount as a String and we affectation it in the console.
Finally, we don’t balloon to abutting the streams opened by calling the abutting methods of the XSSFWorkbook and FileInputStream objects.
It gives us the afterward complete cipher for our ReadExcel class :
By active the ReadExcel chic on a JVM, the contacts.xlsx book should be apprehend on your apparatus and you should accept the afterward result :
That’s all for that tutorial.
If you appetite to apprentice how to accomplish Microsoft Excel XLSX files in Java, you can apprehend our committed tutorial on Medium :
To ascertain added tutorials on Java and Android development, you can subscribe to the SSaurel’s Channel :
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