Learn Java from scratch with input/output methods, user-defined methods, and basic data types. Build sequential, selective, and iterative programs through projects to begin your programming journey.

java_eleven.tar.gz

python

java

java-copy

This course focuses exclusively on teaching Java to beginners and demystifies procedural programming by grounding each concept in a hands-on project. 

You’ll start by learning built-in input and output methods, followed by user-defined methods. As you progress, you'll explore basic data types and apply them in sequential, selective, and iterative program structures. 

Finally, you'll use these concepts to complete an engaging project. By the end, you'll develop a fascination with Java programming, making it an excellent start to a career in computing for anyone looking to learn Java.

Learn Java

You receive an email from a long-forgotten client. They want you to undertake a Java project for them. To complete it, they've sent you all the project details you require via email. Here’s what you know about your role and the project’s requirements:

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Math Quiz</title>
</head>
<body>
    
    <div class="cli-container" id="cli"></div>
    <script src = index.js>
        
    </script>
</body>
</html>

// Get a reference to the command-line interface container
const cli = document.getElementById("cli");

// Initialize variables to keep track of the user's name, score, and the current question
let userName = "";
let score = 0;
let currentQuestion = 0;

// Function to display a new question or end the quiz
function displayQuestion() {
    if (currentQuestion < questions.length) {
        // Display the current question and create an input field for the answer
        cli.textContent += `${questions[currentQuestion].question}\n`;
        // Use a "hidden" input field with oninput to hide the border when typing
        cli.innerHTML += `Ans: <input type="text" id="userAnswer" onkeydown="handleInput(event)" oninput="hideBorder(event)"><br>`;
        // Set the focus on the input field to allow typing without clicking
        document.getElementById("userAnswer").focus();
    } else {
        // The quiz is over, display the final score
        endQuiz();
    }
}

// Function to hide the border of the input field when typing
function hideBorder(event) {
    const input = event.target;
    input.style.border = "none";
}

// Function to handle user input
function handleInput(event) {
    if (event.key === "Enter") {
        // Get the user's answer from the input field
        const userAnswer = document.getElementById("userAnswer").value;
        // Get the correct answer for the current question
        const correctAnswer = questions[currentQuestion].answer;
        cli.textContent += `${userAnswer}\n`;

        // Check if the user's answer is correct
        if (userAnswer === correctAnswer) {
            cli.textContent += "Correct answer.\n\n";
            score++;
        } else {
            cli.textContent += `Oops, that's not right. The correct answer is ${correctAnswer}\n\n`;
        }

        // Move to the next question and display it
        currentQuestion++;
        displayQuestion();
    }
}

// Function to end the quiz and display the final score
function endQuiz() {
    cli.textContent += `Thanks for giving the quiz, ${userName}. Your score is ${score} out of ${questions.length}.\n`;
}

// Array of math questions and answers
const questions = [
    { question: "What is 2+6?", answer: "8" },
    { question: "What is 8-1?", answer: "7" },
    { question: "What is 9/3?", answer: "3" },
    { question: "What is 3-9?", answer: "-6" },
    { question: "What is 6-3?", answer: "3" },
];

// Function to prompt the user for their name
function promptForName() {
    cli.innerHTML += "Please enter your name: <input type='text' id='userName' onkeydown='handleNameInput(event)'><br>";
    document.getElementById("userName");
}

// Function to handle user input for the name
function handleNameInput(event) {
    if (event.key === "Enter") {
        // Get the user's name from the input field
        userName = document.getElementById("userName").value;
        cli.textContent += `${userName}\n\nHello, ${userName}! Welcome to the math quiz.\n\n`;
        // Start the quiz by displaying the first question
        displayQuestion();
    }
}

// Start by prompting the user for their name
promptForName();

/* Styling for the command-line interface container */
.cli-container {
    font-family: monospace;
    white-space: pre;
    background-color: black;
    color: white;
    padding: 10px;
}

/* Styling for the text input box */
input[type="text"] {
    background-color: black;
    color: white;
    border: none; /* Hide the border */
    width: 10ch; /* Adjust the width as needed */
    outline: none; /* Remove the focus outline */
}

codemirror

Get an idea of what will be covered in the course.

Introduction to Java

Java Methods and Data Types

Java Comparison Operators, Conditional Statements, and Loops

You Are Hired for a Java Project

The scenario

Your role

Project description

Project requirements

What the project will look like to its users

Learn to code in Java

Project-based learning