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<!DOCTYPE html>
<html lang="en">
<head>
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  <title>Java Basics - The Checklist</title>
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<body>
  <header>
    <h1><a href="index.html">The Checklist</a></h1>
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  <nav>
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    <section class="checklist">
      <h2>Java Basics</h2>
      <ul>
        <!-- Example 1: Introduction to Java -->
        <li class="checklist-item">
          <div class="section">
            <div class="section-box">
              <label class="section-box-label">
                <input type="checkbox" class="checkbox" data-checklist="java-basics">
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              </label>
            </div>
            <div class="section-title">
              <label class="section-title-label">
                Introduction to Java
                <span class="dropdown-arrow"></span>
              </label>
            </div>
          </div>
          <div class="hidden-text code-snippet" data-example="1">
            <p>
              Java is a versatile and widely used programming language known for its portability and ease of use. It's widely used for developing web and mobile applications, enterprise software, and more.
            </p>
            <pre class="code-block">
public class HelloWorld {
    public static main(String[] args) {
        System.out.println("Hello, Java!");
    }
</pre>
            <button class="copy-button" onclick="copyToClipboard(1)">Copy</button>
          </div>
        </li>

        <!-- Example 2: Variables and Data Types in Java -->
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                Variables and Data Types in Java
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              </label>
            </div>
          </div>
          <div class="hidden-text code-snippet" data-example="2">
            <p>
              Variables in Java store data, while data types define the kind of data a variable can hold. Common data types include int, double, and String, among others.
            </p>
            <pre class="code-block">
int age = 30;
double price = 19.99;
String name = "Amit Aryan";
</pre>
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          </div>
        </li>

        <!-- Example 3: Operators in Java -->
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              <label class="section-title-label">
                Operators in Java
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              </label>
            </div>
          </div>
          <div class="hidden-text code-snippet" data-example="3">
            <p>
              Operators in Java perform various operations, including arithmetic, comparison, and logical operations. These are essential for manipulating data and making decisions in your programs.
            </p>
            <pre class="code-block">
int a = 10;
int b = 5;
int result = a + b; // result will be 15
</pre>
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          </div>
        </li>

        <!-- Example 4: Control Structures in Java -->
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                Control Structures in Java
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          </div>
          <div class="hidden-text code-snippet" data-example="4">
            <p>
              Control structures like if-else, switch, and loops (for, while, do-while) help in controlling the flow of your Java programs, allowing you to make decisions and repeat actions as needed.
            </p>
            <pre class="code-block">
if (condition) {
    // Code to execute when the condition is true
} else {
    // Code to execute when the condition is false
}
</pre>
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        <!-- Example 5: Functions (Methods) in Java -->
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            <div class="section-title">
              <label class="section-title-label">
                Functions (Methods) in Java
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              </label>
            </div>
          </div>
          <div class="hidden-text code-snippet" data-example="5">
            <p>
              Functions (methods) are reusable blocks of code that perform specific tasks. They improve code organization and make it easier to maintain and understand.
            </p>
            <pre class="code-block">
public int add(int a, int b) {
    return a + b;
}
</pre>
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        </li>

        <!-- Example 6: Arrays in Java -->
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                Arrays in Java
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              </label>
            </div>
          </div>
          <div class="hidden-text code-snippet" data-example="6">
            <p>
              Arrays are used to store multiple values of the same type in Java. They are fundamental for working with collections of data.
            </p>
            <pre class="code-block">
int[] numbers = {1, 2, 3, 4, 5};
</pre>
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          </div>
        </li>

        <!-- Example 7: Object-Oriented Programming (OOP) in Java -->
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                Object-Oriented Programming (OOP) in Java
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          </div>
          <div class="hidden-text code-snippet" data-example="7">
            <p>
              Object-Oriented Programming (OOP) is a paradigm in Java that focuses on creating objects and classes. This concept helps in organizing and modeling real-world entities.
            </p>
            <pre class="code-block">
class Person {
    String name;
    int age;

    public Person(String name, int age) {
        this.name = name;
        this.age = age;
    }
}
</pre>
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          </div>
        </li>

        <!-- Example 8: Inheritance in Java -->
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                Inheritance in Java
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            </div>
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          <div class="hidden-text code-snippet" data-example="8">
            <p>
              Inheritance allows one class (subclass or derived class) to inherit attributes and methods from another class (superclass or base class). It facilitates code reuse and extensibility.
            </p>
            <pre class="code-block">
class Vehicle {
    String brand;

    public Vehicle(String brand) {
        this.brand = brand;
    }
}

class Car extends Vehicle {
    int speed;

    public Car(String brand, int speed) {
        super(brand);
        this.speed = speed;
    }
}
</pre>
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        <!-- Example 9: Polymorphism in Java -->
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                Polymorphism in Java
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            <p>
              Polymorphism enables objects of different classes to be treated as objects of a common superclass. This promotes flexibility and dynamic method invocation in Java programs.
            </p>
            <pre class="code-block">
class Animal {
    public void sound() {
        System.out.println("Animal makes a sound");
    }
}

class Dog extends Animal {
    public void sound() {
        System.out.println("Dog barks");
    }
}

class Cat extends Animal {
    public void sound() {
        System.out.println("Cat meows");
    }
</pre>
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