Java Read Excel Workbook from InputStream using Apache POI

In this Java Apache POI tutorial we learn how to use the WorkbookFactory class of Apache POI library to read an Excel Workbook from a given java.io.InputStream object.

Java Convert String to InputStream

In this Java tutorial we learn how to use Java core API to convert a String value into an InputStream object in Java programming language.

Java Convert classpath resource JSON File to Java Object using Gson

In this Java Gson tutorial, we show you how to read a JSON file from classpath resources and convert the JSON content to Java object using the Gson library and Apache Commons IO library. By different Java example programs we learn how to convert JSON content to a HashMap, a List of Map, an object of a custom defined class or a List of objects.

Copy InputStream to File in Java using Apache Commons IO

In this Java tutorial we learn how to use the FileUtils utility class of Apache Commons IO library to copy bytes of an InputStream into a destination File.

Convert CharSequence to InputStream in Java using Apache Commons IO

In this Java tutorial, we learn how to use the IOUtils utility class in Apache Commons IO library to convert a CharSequence object to an InputStream object.

Convert String to InputStream in Java using Apache Commons IO

In this Java tutorial, we learn how to use the IOUtils utility class in Apache Commons IO library to convert a String object to an InputStream object.

Convert InputStream to Char Array in Java using Apache Commons IO

In this Java tutorial, we learn how to read the InputStream object as a char array using IOUtils utility class of Apache Commons IO library.

Convert InputStream to String in Java using Apache Commons IO

In this Java tutorial, we learn how to read the InputStream object as a String using IOUtils utility class of Apache Commons IO library.

Convert InputStream to Byte Array in Java using Apache Commons IO

In this Java tutorial, we learn how to read the InputStream object as a byte array using IOUtils utility class of Apache Commons IO library.

Java Read List of Strings of InputStream using Apache Commons IO

In this Java tutorial, we learn how to read a list of Strings of an InputStream object by using IOUtils utility class of Apache Commons IO library.