How To Learn Java (Step by Step Guide)

Data Structures and Algorithms

A data structure is an assembly of data values that are organized, managed, and stored in a particular format. It also defines relationships between data values so that the values can be easily manipulated.

Java uses a lot of collection objects to organize and store data in different ways. For example, a simple list can store some integers, or names of students, or complete set of information that define a person using objects:Best java training in vizag

List<String> myList = new ArrayList<String>();
myList.add("James");
myList.add("Shane");
myList.add("Abby");
System.out.println(myList);

This will give the output as [James, Shane, Abby].

Similarly, algorithms like Binary search, merge sort, bubble sort, etc., are widespread, and you should be familiar with them to know the internal workings of Java collections.

Learn through the most upvoted data structures and algorithms tutorials and courses.

How to Set up the Environment

To set up Java in your machine, install JDK or Java Development Kit and JRE, i.e., Java Runtime Engine. You should have the required system memory space to install both. Both JDK and JRE can be downloaded from the Oracle website for any platform (Windows, macOS, Linux, etc.). It is simple to follow the instructions on the screen for installation; it is very straightforward. After installation, you have to set up the environment variables (PATH) on your machine. The path is nothing but the location where JDK and JRE have been installed (most likely C:\Program Files).

IDE (Integrated Development Environment)

For easy development, build, and testing purposes, it is best to use IDE to concentrate on the coding aspect more. IDE helps you follow best practices in the code, prompts for compilation (and sometimes runtime) errors, gives suggestions, generates standard code, adds comments, and more. It is also easier to import and include libraries in your workspace when you use IDE. Some popular Java IDEs are: