Gain insights into Java essentials, including programming paradigms, objects, data types, and algorithms. Delve into extensive exercises to prepare for a software development career.

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This course is your detailed guide to the fundamentals of the Java programming language. This course will get you on the fast track to becoming a proficient and modern Java developer.

In this course, you will start by covering different programming paradigms like object-oriented and procedural programming. You will then cover the fundamentals of programming in Java such as: objects and data types, variables, arrays, and conditional statements.

In the latter half of the course, you will cover iterative constructs, useful algorithms, and data structures. With over 100 problems, 11 quizzes, and 9 challenges, this course will get you prepared for a career in software development.

A Complete Guide to Java Programming

We have already been introduced to algorithms. We can solve any problem by breaking it down into a sequence of steps. Before writing the final code, we could write the sequence of steps in our natural language, and that is how we construct an algorithm to solve problems.

## Compute molecular mass of hydrocarbon 

In the following part, we will compute the number of molecules in a hydrocarbon. 
Notice the algorithm. That is the same for any other language, we can write the same program in `C++`, or `C#`, although syntactically there will be differences. The steps of the algorithm vary. Let us see the algorithm in our natural language first.

The algorithm will look like this:

- **Step 1**: Take input and store the mass of hydrocarbon, the number of carbon, and the number of hydrogen atoms.

- **Step 2**: Find and store the formula weight of one mole.

-  **Step 3**: Find the number of molecules in a given mass of hydrocarbon using the above formula.

-   **Step 4**: Output the stored input values and the result.

Considering that the algorithm is the same, let’s suppose that the value of the X-axis value is 1 for any programming language other than Java. However, the syntactical difference makes the second value change. If we consider that the algorithm is the X-axis and the syntactical difference as Y-axis, then the hypothetical value might be (1, 2) and (1, 5). Moreover, they are discrete, distinct, and separated. 

### Code 1

Let's see the first Java program. If you want to rerun the code, write `java main` in the terminal: 

# Compute molecular mass of hydrocarbon 

In the following part, we will compute the number of molecules in a hydrocarbon. 
Notice the algorithm. That is the same for any other language, we can write the same program in `C++`, or `C#`, although syntactically there will be differences. The steps of the algorithm vary. Let us see the algorithm in our natural language first.

The algorithm will look like this:

- **Step 1**: Take input and store the mass of hydrocarbon, the number of carbon, and the number of hydrogen atoms.

- **Step 2**: Find and store the formula weight of one mole.

-  **Step 3**: Find the number of molecules in a given mass of hydrocarbon using the above formula.

-   **Step 4**: Output the stored input values and the result.

Considering that the algorithm is the same, let’s suppose that the value of the X-axis value is 1 for any programming language other than Java. However, the syntactical difference makes the second value change. If we consider that the algorithm is the X-axis and the syntactical difference as Y-axis, then the hypothetical value might be (1, 2) and (1, 5). Moreover, they are discrete, distinct, and separated. 

## Code 1

Let's see the first Java program. If you want to rerun the code, write `java main` in the terminal: 

You will learn how algorithms come in handy while solving problems in this lesson.


Java, a High Level Language with a Purpose

How Java Programming Works

Objects and Data Types

Variables: The Name of a Field

Arrays: The Container Objects

Operators and Conditional Statements

Iterative Constructs, Entry and Exit Controlled Loops

Algorithms

Basic Input and Output

Classes and Objects

Interface and Abstraction

Exception Handling and Data Structures

Conclusion

Appendix

Algorithms: An Introduction

Compute molecular mass of hydrocarbon