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POmultiple instance can't use the same variable, variable not changing
 

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  1. POmultiple instance can't use the same variable, variable not changing
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    <p>I am not quite sure what is wrong with this, I am sure it has to do with the scope. Yesterday I had an issue where a field would initialize itself back to zero due to me recalling the method more than once, making a class field fixed this as it retained it's value regardless of how many time any method is called.</p> <p>Now I have the opposite problem, I need the field to reset because another object needs to use it(is this possible/bad practice?)</p> <p>Here is the code:</p> <pre><code>public class TestDigitalCamera { static String brand; static double megaPixels; static double price; //create 2 camera instances with the values of the variables tied to the arguments. static DigitalCamera camera = new DigitalCamera(brand, megaPixels); static DigitalCamera camera2 = new DigitalCamera(brand, megaPixels); public static void main(String[] args) { //no idea what this technique is called, need to look back but I know what it does //I could use a for loop and reuse the same object over and over(would that even work anyway?) but the task says //that i require 4 instances, ofc I am just working with 2 atm for simplicity camera = getInformation(camera); displayInfo(); camera2 = getInformation(camera2); displayInfo(); } //it basically runs this for the camera instance...right? lol public static DigitalCamera getInformation(DigitalCamera dc){ Scanner userInput = new Scanner(System.in); //self explanatory System.out.println("Enter brand: "); brand = userInput.next(); System.out.println("Enter Mega Pixels: "); megaPixels = userInput.nextDouble(); //I have another class setup with getters/setters for this, which get used in the next method dc.setBrand(brand); dc.setMegaPixels(megaPixels); return dc; } public static void displayInfo(){ //users the getters to pull the values //the price is calculated using an if statement System.out.println("Brand: " + camera.getBrand() + "\n" + "Megapixels : " + camera.getMegaPixels() + "\n" + "Price : $" + camera.getPrice() + "\n"); } } </code></pre> <p>Is this due to the scope? the variable is use-able for any and all objects but it may only be used for 1? What's the best way to approach this? </p>
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    1. COAre you aware that displayInfo always uses camera, so it never uses camera2?
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    2. COOMG...I feel like such a tool lol. What would be the best way to get it to output both without having to duplicate the code?
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    3. COmake displayInfo take an argument: displayInfo(DigitalCamera camera)
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