Question

Java Code:

Write an application that takes in user input. (Name, Age, and Salary)

------

Write an application that includes a constructor, user input, and operators.

Answer 1

Two programs are provided below. Both programs satisfy the conditions you have given in question. Both programs are explained in code comments . Output screenshot is also provided. If you need any further clarification please ask in comments.

###############################################################################

CODE 1

import java.util.Scanner; //importing to use scanner for taking input

public class Employee {

        //main method
        public static void main(String[] args) {
                
                //variables to hold values
                String name;
                int age;
                double salary;
                //creating object of Scanner to take input from user through System standard input
                Scanner scan=new Scanner(System.in); 
                
                System.out.println("Enter name: ");
                name=scan.nextLine(); //taking string input through scanner nextLine()
                System.out.println("Enter age:");
                age=scan.nextInt(); //taking integer input using scanner nextInt()
                System.out.println("Enter salary:");
                salary=scan.nextDouble(); //taking double input using scanner nextDouble()
                
                //displaying all the variables data
                
                System.out.println("Name: "+ name +" Age: "+ age +" Salary: "+salary);
                scan.close(); //closing scanner
        
        }
}

OUTPUT

###########################################################################

CODE 2

import java.util.Scanner; //importing to use scanner for taking input

public class Mathematics {
        //private data members of class
        private double x;
        private double y;
        //constructor
        public Mathematics(double num1, double num2) {
                x = num1; //assign value of num1 in x
                y = num2; //assign value of num2 in y
        }
        //function to find sum
        public void sum()
        {
                double result=x+y; //using + operator to find sum
                System.out.println("Sum of "+ x +" and "+ y +" is: "+result);
        }
        //function to find subtraction
        public void sub()
        {
                double result=x-y; //using - opereator to find subtraction
                System.out.println("Subtraction of "+ x +" and "+ y +" is: "+result);
        }
        //function to find division
        public void division()
        {
                double result=x/y; //using / operator to find division
                System.out.println("Division of "+ x +" and "+ y +" is: "+result);
        }

        //main method
        public static void main(String[] args) {
                
                //variables to hold values
                double x,y;
                //creating object of Scanner to take input from user through System standard input
                Scanner scan=new Scanner(System.in); 
                
                System.out.println("Enter value of x: ");
                x=scan.nextDouble(); //taking double input using scanner nextDouble()
                System.out.println("Enter value of x: ");
                y=scan.nextDouble(); //taking double input using scanner nextDouble()
                
                Mathematics obj=new Mathematics(x, y); //creating object of Mathematics class using x and y as parameters
                obj.sum(); //calling sum()
                obj.sub(); //calling sub()
                obj.division(); //calling division()
                scan.close(); //closing scanner
        }
}

OUTPUT