incompatible types error i can't figure out

Question

Ok, seperated my code. Now when I run I am just getting one error as follows:

Exception in thread "main" java.lang.RuntimeException: Uncompilable source code - Erroneous tree type: InventoryPro2.MobilePhone
    at InventoryPro2.InventoryPro2.main(InventoryPro2.java:12)
Java Result: 1

What I took from previous replies was that I needed to move the MobilePhone class and the InventoryPro2 class into seperate .java files within the same project. Did I miss the point? As I said before I am brand new to this and it has been terrible trying to learn all of this at a rapid pace while learning another programming language at the same time. Thank you for the help thus far it is greatly appreciated.

   package InventoryPro2;



    public class InventoryPro2 {

        public static void main(String args[]) {
            MobilePhone MobilePhoneObject = new MobilePhone();
            MobilePhoneObject.MobilePhone();
            System.out.println("Mobile Phone Inventory");
            System.out.println();//skips a line

            MobilePhone[] Phones = new MobilePhone[5];

            Phones[0] = new MobilePhone(1, "Motorola", "Electronics", 98, 150.00);
            Phones[1] = new MobilePhone(2, "LG", "Electronics", 650, 199.99);
            Phones[2] = new MobilePhone(3, "Samsung", "Electronics", 125, 200.25);
            Phones[3] = new MobilePhone(4, "Nokia", "Electronics", 200, 100.05);
            Phones[4] = new MobilePhone(5, "IPhone", "Electronics", 138, 125.75);


            for (int count = 0; count < Phones.length-1; count++) {



                System.out.printf("Product Number:  %1f\n", Phones[count].getproductNumber());
                System.out.printf("Product Name:  %s\n", Phones[count].getname());
                System.out.printf("Units In Stock:  %.2f\n", Phones[count].getunitsInStock());
                System.out.printf("Unit Price: $%4.2f\n", Phones[count].getunitPrice());
                System.out.printf("Inventory Value:  $%4.2f\n", Phones[count].gettotalInv());
                System.out.println(); //blank line to seperate products

            }
        }
    }

package inventorypro2;

class MobilePhone { // Create class to store values

    private double productNumber; // Variables
    private String name;
    private String department;
    private double unitsInStock;
    private double unitPrice;

    public MobilePhone() {
        this(0.0, "", "", 0.0, 0.0);
    }

    public MobilePhone(double productNumber, String name, String department,
            double unitsInStock, double unitPrice) { //assign variables
        this.productNumber = productNumber;
        this.name = name;
        this.department = department;
        this.unitsInStock = unitsInStock;
        this.unitPrice = unitPrice;
    }

    public double getproductNumber() { // retrieve values
        return productNumber;
    }

    public String getname() {
        return name;
    }

    public String getdepartment() {
        return department;
    }

    public double getunitPrice() {
        return unitPrice;
    }

    public double getunitsInStock() {
        return unitsInStock;
    }

    public void setproductNumber(double productNumber) {
        this.productNumber = productNumber;
    }

    public void setname(String name) {
        this.name = name;
    }

    public void setdepartment(String department) {
        this.department = department;
    }

    public void setunitPrice(double unitPrice) {
        this.unitPrice = unitPrice;
    }

    public void setunitsInStock(double unitsInStock) {
        this.unitsInStock = unitsInStock;
    }

    public double gettotalInv() {
        return getunitPrice() * getunitsInStock();
    }
}

Answer 1

Phones[0] = count + 1;

The left is not an integer, but the right is an integer.

Regarding your most recent edit, I would suggest putting one class per file (and make them public).

Alternatively, make an inner class. But the file should have one outer class (doesn't have to be this way: Java: Multiple class declarations in one file), but I think it will make things simpler.

Answer 2

Phones[0] = count + 1;

What are you trying to do here? You are assigning an integer (int type)to a MobilePhone (MobilePhone type)! Remove that line, you'd be good to go.