XLSX to CSV Convert in Java

XLSX to CSV Convert in Java: We have realtime business scenarios to convert xlsx file to csv file using Java. When I searched for the existing solutions for this usecase I could find some program in github, but the solution can not be used directly, it requires some modifications. I have mentioned the github source code link below for reference.

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5 Ways to Remove Null from ArrayList

5 Ways to Remove Null from ArrayList: Removing null from arraylist become some realtime business scenario many times. Removing null from arraylist is actually easy as it can be. We have many ways to remove null from arraylist.   5 Ways to Remove Null From ArrayList: Using collections.singleton Using removeAll with one null value list Using Iterator Using while loop (rarely used)

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Multithreading Program in Java with online shop scrap Example

Multithreading Program in Java with online shop scrap Example

Multithreading Program in Java with online shop scrap Example: Multithreading is a process of executing multiple threads at a time. In our below example, we are sending the book ISBN number to 3 different online shops to scrap and get the price details. Final scrapped price details are written as JSON data. We have implemented multithreading in the below program

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Creating Image using Java Without any Extra Libs

Creating Image using Java Without any Extra Libs

Creating Image using Java Without any Extra Libs: Images are more interactive way to present the contents rather than presenting everything in plain texts. Dynamic content images can be created using java without any extra libs /additional libraries. Creating dynamic images can be automated using the below java program.   Requirement: No Additional/Extra Libraries. Need to give any background image

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How to Read CSV File in Java?

How to Read CSV File in Java?: CSV file is delimited by comma by default. This program explains how to split the fields and read line by line contents from the given csv file.   Requirements: It does not need any additional jars.   Steps in overview: Read the input csv file using FileReader. BufferedReader takes the filereader as input

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5 Must to know differences in java

5 Must to know differences in java: Being a java developer, you must know this 5 differences, because which tells about your correct and deep understanding of this programming language, as well as it is very basic to know in java. 1. As everyone know String is the heart part in java. Because very difficult to write a simple utility/business

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How to Read Excel File xlsx in Java using Apache Poi?

How to Read Excel File xlsx in Java using Apache Poi?

How to Read Excel File xlsx in Java using Apache Poi?: Excel files are now two different versions, Microsoft Excel 97-2003 Worksheet (.xls) and Microsoft Excel Worksheet (.xlsx). In the below post we are going to see how to read the microsoft excel worksheet xlsx file using apache poi jars. All the required jars, sample excel(.xlsx) files are attached with

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