Creating & Sorting Arrays CoffeeDriver

I am supposed to be creating an application to keep track of items for a local coffee shop, additionally provides a way to print out a listing of the items. I'm supposed to create a class named Item,

• A String instance variable to hold the item name
• A double instance variable to hold the price
• A co开发者_如何学JAVAnstructor that takes a String and double to initialize the instance variables
• A get and set method for each instance variable

Then I'm supposed to create a CoffeeDriver with these methods:

• sortName – this method sorts the array of items by item name and then displays the name and price of all items on the screen
• sortPrice – this method sorts the array of items by item price and then displays the name and price of all items on the screen
• main - It creates an array of Item objects using the data above to set each Item's information. After initializing the array, prompt the user for how they want to see the list – sorted by name or price. Then call the appropriate method.

This is the code I have so far for the coffee driver. This java thing is really hard for me :(

import javax.swing.*;
import java.text.DecimalFormat;
import java.util.*;

public class CoffeeDriver
{
    public static void main(String[] args)
    {
        Item[] items = new Item[] 
        {
            new Item("Donut", .75),
            new Item("Coffee", 1.00),
            new Item("Bagel", 1.25),
            new Item("Milk", 1.50),
            new Item("Water",  2.00)
        };

        Object[] possibleValues = { "Price", "Name" };
        Object selectedValue = JOptionPane.showInputDialog(null, 
            "How would you like items sorted", "SORTING",
            JOptionPane.INFORMATION_MESSAGE, null,
            possibleValues, possibleValues[0]);

        if(selectedValue == "Price")
        {       
            System.out.println("sorting by price" + items);
        }
    }

    public static void sortPrice(String[] name, double[] price)
    {   
        DecimalFormat money = new DecimalFormat("$0.00");
        arrays.sort(price);

        JOptionPane.showMessageDialog(null, name[0]+ " " + money.format(price[0]) + "\n" +
            name[1] + " " + money.format(price[1]) + "\n" +
            name[2] + " " + money.format(price[2]) + "\n" +
            name[3] + " " + money.format(price[3]) + "\n" +
            name[4] + " " + money.format(price[4]));
        }
    }
}

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if(selectedValue == "Price")

Don't use "==" to compare objects. Use the equals() method.