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

# Solution review

Let’s take a look at the solution first.


public class PrimitiveDataTypes {
    public static void main(String[] args){
        final byte numOne = 104;
        final byte numTwo = 110;
        int sumOfTwoNumbers;
        sumOfTwoNumbers = numOne + numTwo;
        //sumOfTwoNumbers = (byte)(numOne + numTwo);
        System.out.println("Sum: " + sumOfTwoNumbers);
    }
}

## Explanation

We have turned both `byte` data types to `final`. This solves the “literals” issue.
We could have also cast the value. The byte data type has a minimum value of `-128` and a maximum value of `127` (inclusive). The sum of the two byte-sized variables is only stored in data types like `int`, `float`, `double` or `long`, etc. We used `int` in this case. 

The solution to the exercise covered in the previous lesson is explained 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

Solution Review: Compute the Sum

Solution review