How to check the JDK version of a class file
When running a Java application it is mandatory that the JRE version to match or to be higher that the JDK version used to compile the application.
You will get the "Unsupported major.minor version 52.0" error when trying to run an Java 1.8 application using a lower version of Java.
Abstract keyword in Java
The abstract keyword is used in Java for abstraction. The abstraction is the process of selecting data and displaying only the relevant details to the object. If helps to reduce the programing complexity and the efort.
All keywords in Java
Keywords are special words in the programing language which have reserved use in the language. Keywords may not be used as identifiers in Java; for example you cannot declare a field whose name is a keyword.
How to use JSON Object in JavaScript
JSON is part of JavaScript programming language and is the main choise when it comes to data manipulation in JavaScript.
JSON is used from storing data, transfering data between client and server to configuring data.
How to read CSV file in Golang
How to read CSV file in Golang using reader from encoding/csv
package. For this example we took an simple example of a CSV file containing three columns name, address and phone.
How to convert string to uppercase in Golang
How to convert a string into uppercase in Golang using ToUpper
method from strings
package.