CHAPTERTEN
Be focused and you will archive alot. choose your ON CSS
Explore moreBe focused and you will archive alot. choose your ON CSS
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Explore the different cores of java programming below
Methods in Java classes define the behavior of objects. They are blocks of code that perform specific actions and are invoked using the dot operator.
Inheritance is a mechanism where one class (child) derives properties and behavior from another class (parent).
Static members belong to the class rather than any specific instance. This means they can be accessed without creating an object.
// Simple class example class Animal { String name; int age; void displayInfo() { System.out.println("Name: " + name + ", Age: " + age); } } public class Main { public static void main(String[] args) { Animal dog = new Animal(); // Creating an object dog.name = "Buddy"; dog.age = 5; dog.displayInfo(); // Output: Name: Buddy, Age: 5 } }
Name: Buddy, Age: 5
// Class with constructors and methods class Calculator { int number1, number2; // Constructor Calculator(int num1, int num2) { number1 = num1; number2 = num2; } // Method to add two numbers int add() { return number1 + number2; } // Method to subtract two numbers int subtract() { return number1 - number2; } } public class Main { public static void main(String[] args) { Calculator calc = new Calculator(10, 5); System.out.println("Sum: " + calc.add()); // Output: Sum: 15 System.out.println("Difference: " + calc.subtract()); // Output: Difference: 5 } }
Sum: 15 Difference: 5
class Car { String model; } // Inheritance example class Vehicle { String brand = "Ford"; void honk() { System.out.println("Beep Beep!"); } } class Car extends Vehicle { String model = "Mustang"; } public class Main { public static void main(String[] args) { Car myCar = new Car(); myCar.honk(); // Output: Beep Beep! System.out.println("Brand: " + myCar.brand + ", Model: " + myCar.model); // Output: Brand: Ford, Model: Mustang } }
Beep Beep! Ford, Model: Mustang
// Static members example class MathUtils { static double pi = 3.14159; static double calculateCircleArea(double radius) { return pi * radius * radius; } } public class Main { public static void main(String[] args) { System.out.println("Pi: " + MathUtils.pi); // Output: Pi: 3.14159 System.out.println("Area: " + MathUtils.calculateCircleArea(5)); // Output: Area: 78.53975 } }
Squared value: 2 Square root: 4
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