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.


public class NegAndOdd {

    public static void addition(int []arr) {
        int sum = 0;
        for (int i = 0; i < arr.length; i++ ){
            if(arr[i] % 2 != 0 && arr[i] < 0){
                sum += arr[i];
            }
        }
        System.out.println("\nThe sum of negative and odd numbers: " + sum);
    }

    public static void main(String []args) {
        int []arr = {-10, 15, -1, -8, 7};
        System.out.print("Array: ");
        for (int i:arr)
           System.out.print(i + " "); 
        addition(arr);
    }
}

## Explanation

The solution to the problem is pretty straightforward. **Line 6** checks if the given number in an array is odd by taking `%` mod with `2` and also checks if the number is negative by using `<`. If both the conditions turn out to be `True`, the number is added to the sum.




The solution to the ‘Adding Negative and Odd Numbers’ challenge is discussed 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: Adding Negative and Odd Numbers

Coding