将此程序链接到此类时遇到问题。该程序接受一组 String + double 数组并经过一系列排序以产生结果。我们的指示是按名称排序，然后按价格排序。
主要问题是字符串显示为十六进制，例如（Item@4fjipe）等。
第二个问题是我的类型。我只是不知道如何让它们工作。如果可能，请提供帮助。我将包括课程和程序。请记住，它们是 2 个不同的 .java 一起工作。顺便说一句，我是初学者。
public class Item
{
private String itemName; // hold the name of the item
private double itemPrice; // hold the price of the item
public Item(String s, double p) // Constructor
{
itemName = s;
itemPrice = p;
}//end constructor
public void setName(String n)
{//method to set the item name
itemName = n;
}//end method
public String getName()
{//method to get the item name
return itemName;
}//end method
public double setPrice(double p1)
{//method to set the price of the item
itemPrice = p1;
return itemPrice;
}//end method
public double getPrice()
{//method to get the price of the item
return itemPrice;
}//end method
}//end class
现在其他的开始了。这仍然是一团糟。
import javax.swing.*;
import java.util.Arrays;
public class CoffeeDriver
{
public static void main (String[] args)
{
Item[] itemArray = new Item[5]; // Array of type Item declaration
boolean loopControl = false; //variable for control of our loop
while (!loopControl)
{
itemArray[0] = new Item("Coffee", 1.00);
itemArray[1] = new Item("Water", 2.00);
itemArray[2] = new Item("Milk", 1.50);
itemArray[3] = new Item("Bagel",1.25);
itemArray[4] = new Item("Donut", 0.75);
String input = JOptionPane.showInputDialog(null, "Welcome to Wings Coffee Shop. We have a great list items on our menu. \nWould you like to see these items sorted by name of by price? (n/p):");
if(input.equals("n"))
{
sortName(itemArray);
JOptionPane.showMessageDialog(null, itemArray);
}//end if
else if(input.equals("p"))
{
sortPrice(itemArray);
JOptionPane.showMessageDialog(null, itemArray);
}
else
{
loopControl = true;
}
}//end while
}//end main
public static void sortName(Item[] itemArray)
{
int n = itemArray.length;
Item temp = new Item("",0);
for (int i =0; i < n; i++)
{
for(int j =1; j<(n-1); j++)
{
temp.setPrice(itemArray[j+1].getPrice());
temp.setName(itemArray[j+1].getName());
if(itemArray[j+1] == itemArray[j])
{
temp.setPrice(itemArray[j+1].getPrice());
temp.setName(itemArray[j+1].getName());
itemArray[j+1].setPrice(itemArray[j].getPrice());
itemArray[j+1].setName(itemArray[j].getName());
itemArray[j].setPrice(temp.getPrice());
itemArray[j].setName(temp.getName());
temp = itemArray[j+1];
itemArray[j+1] = itemArray[j];
itemArray[j] = temp;
JOptionPane.showMessageDialog(null, itemArray);
}//end if
}//end inner for
}//end outer for
}//end sortName
public static void sortPrice(Item[] itemArray)
{
int n = itemArray.length;
Item temp = new Item("",0);
for (int i =0; i < n; i++)
{
for(int j =1; j<(n-1); j++)
{
temp.setPrice(itemArray[j+1].getPrice());
temp.setName(itemArray[j+1].getName());
if(itemArray[j+1] == itemArray[j])
{
temp.setPrice(itemArray[j+1].getPrice());
temp.setName(itemArray[j+1].getName());
itemArray[j+1].setPrice(itemArray[j].getPrice());
itemArray[j+1].setName(itemArray[j].getName());
itemArray[j].setPrice(temp.getPrice());
itemArray[j].setName(temp.getName());
temp = itemArray[j+1];
itemArray[j+1] = itemArray[j];
itemArray[j] = temp;
JOptionPane.showMessageDialog(null, itemArray);
}//end if
}//end inner for
}//end outer for
}//end sortPrice
}//end class