OOPS in java

Java is an OOP language i.e. object oriented programming language. It revolves around the concept of classes and objects. Class: Class is a logical entity. It contains the logic of the program. It is like a blueprint and it does not have physical existence. Object: An object is a physical entity representing memory. Multiple objects...

Data Types

The data type of a variable represents the type of that variable. It decides the range and memory required by that variable. The type of variables and expressions is known to the compiler and the assignments are checked by the compiler for type compatibility. Hence, java is a statically typed language. There are two types...

Variables in Java

Variable is a name given to a memory location. There are three types of variables in java: Local Variables Instance Variables Static Variables Local Variables: Variables which are declared inside a method are called local variables. They can also be declared inside instance blocks, static blocks or constructors. Scope of local variables is within the...

Data Visualization

It is the method to visualize data in pictorial or graphical form and finding patterns and identifying outliers. Its goal is to help us understand the data in a much better and easier way. It is the very first step in data analysis. As the saying goes ‘A picture is worth a thousand words’. Pictorial...

Pandas

In the past two years more data has been created than the entire history of human race. The data also called big data is increasing in such a speed that we'll have 1.7 billion new information every second for every human being. Our traditional data handling techniques are not able to cope up with the...

Variables

Today we are going to talk about types of variables. What is a variable? A variable is a factor or a feature which is liable to change. For e.g.: In an experiment , we took two vitamins,  A(microgram)  and C(milligrams)  to find out total amount of vitamin consumption by 50 people. To calculate total amount...

JVM Architecture

What is Virtual Machine? It is a software that emulates the computer system. It does not exist in real but works like a real system. Eg: On-Screen Keyboard. What is JVM? It is an application-based virtual machine for java. It acts as a runtime execution engine for Java Applications. Architecture: It has three components: Class...