Java functional programming

Java functional programming

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Java functional programming is a paradigm shift in the way we write code. It's all about treating functions as first-class citizens, just like objects or primitives. In functional programming, we focus on composing pure functions to solve problems.

Here are some key concepts and benefits of using Java functional programming:

The benefits of using Java functional programming include:

To get started with Java functional programming, I recommend exploring the following resources:

By embracing Java functional programming, you'll be well on your way to writing more concise, expressive, and maintainable code!

How to create a class and function in Java?

In Java, you can create a class by using the public keyword followed by the name of your class, followed by {} brackets that define the body of your class. A class is essentially a blueprint for creating objects, which are instances of your class.

Here's an example of how to create a simple class in Java:

public class Dog {
private String breed;
private int age;
public Dog(String breed, int age) {
this.breed = breed;
this.age = age;
}
public void bark() {
System.out.println("Woof!");
}
}

In the above example, Dog is the name of our class. We have two private fields: breed and age. These are like variables that can only be accessed within this class. We also have a constructor, which is a special method that gets called when an object of this class is created.

Now let's talk about functions in Java, which are essentially methods inside a class that perform specific actions:

public void bark() {
System.out.println("Woof!");
}

In the above example, bark is a function or method within our Dog class. When we call this function on an instance of our Dog class (let's say, myDog.bark()), it will print "Woof!" to the console.

Here are some key points about functions in Java:

Here are some key rules about how to create functions in Java:

Here are some examples of different types of functions:

    public void printHello() {
System.out.println("Hello, World!");
}

    public int calculateSum(int num1, int num2) {
return (num1 + num2);
}

    public void startGuessingGame() {
Scanner scanner = new Scanner(System.in);
int randomNumber = (int) Math.round(Math.random() * 100);
System.out.println("I'm thinking of a number. Try to guess it!");
while(true) {
int userGuess = scanner.nextInt();
if(userGuess == randomNumber) {
System.out.println(" Congratulations, you guessed it!");
break;
} else if (userGuess < randomnumber) {
System.out.println(" Too low! Guess again.");
} else {
System.out.println("Too high! Try again.");
}
}
}

These are just a few examples of how to create functions in Java. Remember, the most important thing is that your function should be well-organized and easy to understand.

Remember: