Java

Hello World & Basic Class Example

// Hello World
public class HelloWorld {
    public static void main(String[] args) {
        System.out.println("Hello, World!");
    }
}

// Basic Class Example
public class Person {
    private String name;
    private int age;
    
    // Constructor
    public Person(String name, int age) {
        this.name = name;
        this.age = age;
    }
    
    // Getter methods
    public String getName() {
        return name;
    }
    
    public int getAge() {
        return age;
    }
    
    // Method
    public void introduce() {
        System.out.println("Hi, I'm " + name + " and I'm " + age + " years old.");
    }
    
    // Main method to test the class
    public static void main(String[] args) {
        Person person = new Person("Alice", 25);
        person.introduce();
    }
}