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 code first:


public class PrimitiveDataTypes { 

    public static void main(String args[]) {
         
        byte age = 10;
        // byte distance = 144; // exceeding range
        short height = 30000; // inside range
        // short elevation = 40000; // outside range
        int distanceBetweenTwoSatellites = 1000000000; // inside range
        // int distanceBetweenTwoGalaxy = 10000000000; // outside range
        long distanceBetweenTwoGalaxy = 10000000000L; // inside range
        float rateOfInterest = 6/5f; // range is beyond the scope of discussion
        double rateOfHike = 456/123d; // range is beyond the scope of discussion
        char capitalA = 'A';
        boolean isPossible = true;

        System.out.println("Age is: " + age);

        System.out.println("Height is: " + height);

        System.out.println("Distance between two satellites is: " + distanceBetweenTwoSatellites);
        
        System.out.println("Distance between two galaxies is: " + distanceBetweenTwoGalaxy);
        
        System.out.println("Rate of interest is: " + rateOfInterest);
        
        System.out.println("Rate of hike is: " + rateOfHike);
        
        System.out.println("CapitalA: " + capitalA);
        
        System.out.println("isPossible: " + isPossible);
    }
}

## Explanation

The solution is pretty straight forward. The highlighted lines (**5**, **7**, and **11**--**15**) indicate that each primitive data type has a range of values. The commented lines (**6**, **8**, and **10**) show the values that are out of the range of `byte`, `shot`, and `int`. After the successful declaration of variables, we simply print them using the `println` statement.

The primitive data types that Java uses are:

- `byte`
- `short`
- `int`
- `long`
- `float` 
- `double` 
- `char`
- `boolean`


> One primitive value does not share state with other primitive values. 

The solution to the variable declaration exercise 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: Variable Declaration

Solution review