CODEWITHSUNDEEP
java
Gandalf
Gandalf

Reputation: 13683

providing user input for a java class

I have the following class:

class Area
{
    //Get User Input for classes
    int length;
    int width;

    public Area(int x,int y)
    {
        length = x;
        width = y;
    }

    public int getArea() {
        return width * length;
    }

    public static void main(String[] args) 
    {
        Area folk = new Area(4,5);
        System.out.println("Area of 4 * 5 is: " + folk.getArea());
    }
}

I have another class that i use to get user input:

import java.util.Scanner;

class Incoming
{
    public static void main(String[] args) 
    {
        Scanner reader = new Scanner(System.in);
        System.out.println("Enter the first number");
        //get user input for a
        int a = reader.nextInt();
        System.out.println("Input Value Is: " + a);
    }
}

In the first class i want a user to provide the input instead of the predefined values (i.e. Area folk = new Area(4,5))

How can that be done?

Upvotes: 0

Views: 11582

Answers (3)

James McCracken
James McCracken

Reputation: 15766

I'm not sure why you have a main in both of your classes. Maybe I'm mis-understanding something, but this will fix it the way you want (I think).

class Area
{
    //Get User Input for classes
    int length;
    int width;

    public Area(int x,int y)
    {
        length = x;
        width = y;
    }

    public int getArea() {
        return width * length;
    }

    public static void main(String[] args) 
    {
        int x, y;
        Incoming inc = new Incoming();
        x = inc.getInt();
        y = inc.getInt();
        Area folk = new Area(x,y);
        System.out.println("Area of " + x + " * " + y + " is: "
                           + folk.getArea());
    }
}

And the other class:

import java.util.Scanner;
class Incoming
{
    public static int getInt(String[] args) 
    {
        Scanner reader = new Scanner(System.in);
        System.out.println("Enter the first number");
        //get user input for a
        int a = reader.nextInt();
        return a;
    }
}

Upvotes: 0

ppgf135
ppgf135

Reputation: 1

how about:

Scanner reader = new Scanner(System.in);

Area folk = new Area(reader.nextInt(),reader.nextInt());

system.out.println(folk.getArea());

Upvotes: 0

Taymon
Taymon

Reputation: 25666

It looks like you're looking for a way to use the input provided in Incoming elsewhere in your program.

To do this, move the code to get input out of the main method. Declare a new method in Incoming that returns an int and put it there.

Then, in the main method of Area, create an instance of Incoming and call the new method to get an int. Do this twice, then pass the resulting values to the Area constructor.

Upvotes: 1

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