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

# Coding solution

Let’s take a look at the solution first:


import java.util.*;
import java.util.Arrays;

public class ArraySum {
    public static void addingAColectionOfNumbers(int[] aCollectionOfNumbers){
        int sum = 0;
        for (int i = 0; i < aCollectionOfNumbers.length; i++){
            sum += aCollectionOfNumbers[i];
        }
        System.out.println("\n\nThe sum is " + sum);
    }

    public static void main(String[] args){
        int[] anotherNumber = {-10, 15, -1, -8};

        System.out.print("Array: ");
        for (int i:anotherNumber) {
            System.out.print(i + " ");
        }

        addingAColectionOfNumbers(anotherNumber);
    }
}

## Explanation

Doing any arithmetic operations on any number is quite easy. We want to add a range of numbers so the array is easy to use. We can pass a range of values as an array (`aCollectionOfNumbers`) and add them on the fly. Using the shortcut syntax, we can pass as many numbers as possible, to get the result of the addition. Here we pass four numbers: `-10`, `15`, `-1`, and `-8`. And the output is `-4`. We used the `sum` variable to compute the sum by iterating over the whole array using the `for` loop in lines **7--9**.

The solution to the Compute Sum of the Array exercise is explained here.

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 Sum of the Array

Coding solution