// Java program to demonstrate working of method
// overloading in Java
public class Sum {
    
    // Overloaded sum() 
    // This sum takes two int parameters
    public int sum(int x, int y) { return (x + y); }

    // Overloaded sum()
    // This sum takes three int parameters
    public int sum(int x, int y, int z)
    {
        return (x + y + z);
    }

    // Overloaded sum() 
    // This sum takes two double parameters
    public double sum(double x, double y)
    {
        return (x + y);
    }

    // Driver code
    public static void main(String args[])
    {
        Sum s = new Sum();
        System.out.println(s.sum(10, 20));
        System.out.println(s.sum(10, 20, 30));
        System.out.println(s.sum(10.5, 20.5));
    }
}

// Java Program to Illustrate Method Overloading
// By Changing the Number of Parameters

// Importing required classes
import java.io.*;

// Class 1
// Helper class
class Product {
    
    // Method 1
    // Multiplying two integer values
    public int multiply(int a, int b)
    {
        int prod = a * b;
        return prod;
    }

    // Method 2
    // Multiplying three integer values
    public int multiply(int a, int b, int c)
    {
        int prod = a * b * c;
        return prod;
    }
}

// Class 2
// Main class
class Geeks {
    
    // Main driver method
    public static void main(String[] args)
    {
        // Creating object of above class inside main()
        // method
        Product ob = new Product();

        // Calling method to Multiply 2 numbers
        int prod1 = ob.multiply(1, 2);

        // Printing Product of 2 numbers
        System.out.println(
            "Product of the two integer value: " + prod1);

        // Calling method to multiply 3 numbers
        int prod2 = ob.multiply(1, 2, 3);

        // Printing product of 3 numbers
        System.out.println(
            "Product of the three integer value: " + prod2);
    }
}

// Java Program to Illustrate Method Overloading
// By Changing Data Types of the Parameters

// Importing required classes
import java.io.*;

// Class 1
// Helper class
class Product {
    
    // Multiplying three integer values
    public int Prod(int a, int b, int c)
    {
        int prod1 = a * b * c;
        return prod1;
    }

    // Multiplying three double values.
    public double Prod(double a, double b, double c)
    {
        double prod2 = a * b * c;
        return prod2;
    }
}

class Geeks {
    public static void main(String[] args)
    {
        Product obj = new Product();

        int prod1 = obj.Prod(1, 2, 3);
        System.out.println(
            "Product of the three integer value: " + prod1);

        double prod2 = obj.Prod(1.0, 2.0, 3.0);
        System.out.println(
            "Product of the three double value: " + prod2);
    }
}

// Java Program to Illustrate Method Overloading
// By changing the Order of the Parameters

// Importing required classes
import java.io.*;

// Class 1
// Helper class
class Student {
    
    // Method 1
    public void StudentId(String name, int roll_no)
    {
        System.out.println("Name: " + name + " "
                           + "Roll-No: " + roll_no);
    }

    // Method 2
    public void StudentId(int roll_no, String name)
    {
        // Again printing name and id of person
        System.out.println("Roll-No: " + roll_no + " "
                           + "Name: " + name);
    }
}

// Class 2
// Main class
class Geeks {
    
    // Main function
    public static void main(String[] args)
    {
        // Creating object of above class
        Student obj = new Student();

        // Passing name and id
        // Note: Reversing order
        obj.StudentId("Sweta", 1);
        obj.StudentId(2, "Gudly");
    }
}

// Demo Class
class Demo {
    
    public void show(int x)
    {
        System.out.println("In int" + x);
    }
    public void show(String s)
    {
        System.out.println("In String" + s);
    }
    public void show(byte b)
    {
        System.out.println("In byte" + b);
    }
}

class UseDemo {
    
    public static void main(String[] args)
    {
        byte a = 25;
        Demo obj = new Demo();

        // it will go to
        // byte argument
        obj.show(a);

        // String
        obj.show("hello");

        // Int
        obj.show(250);

        // Since char is
        // not available, so the datatype
        // higher than char in terms of
        // range is int.
        obj.show('A');

        // String
        obj.show("A");

        // since float datatype
        // is not available and so it's higher
        // datatype, so at this step their
        // will be an error.
        obj.show(7.5);
    }
}