As a Java developer if you are working with financial systems or developing systems that need granularity in your calculation then you should thinking about BigDecimal. BigDecimal is an immutable class, provides in java.math package. It consists of operations for arithmetic, scale manipulation, rounding, comparison, hashing, and format conversion. In this blog post we will learn how to use BigDecimal through a list of examples.
In this blog post we will go through 5 useful open source libraries to serialization and deserialize JSON data in Java application. For each library we will write a simple code sample to show you how to use the library to convert Java object to a JSON string and vice-versa.
Apache POI is and open source Java library allow you to read and write Microsoft Documents such as Excel workbook, Word document, Powerpoint presentation. In this blog post I will show you how to use Apache POI library to writing an Excel file.