我正在努力弄清楚如何在 JOptionPane 中显示数组的内容。该数组包括商品、价格、数量和优先级。例如，我希望它看起来像这样: “苹果 2.99 2 1” “ Cereal 3.99 3 2” 我目前已将数组输出到控制台，因为我无法正确“显示”数组。这是我现在所拥有的:我感谢所有的帮助!
import java.text.NumberFormat;
import javax.swing.JOptionPane;
public class ShopList {
public static void main(String[] args)
{
String enterName = JOptionPane.showInputDialog(null, "Username: ");
for (int i = 0; i < 2; i++){
index = (int) (25 * Math.random());
String[] options = {"Apples", "Applesauce", "Cereal", "Exit"};
String input = (String)JOptionPane.showInputDialog(null,
"Select an Item",
"Welcome " + enterName + "!",JOptionPane.QUESTION_MESSAGE,null,options,"Apples");
String itemPrice = JOptionPane.showInputDialog("Enter Price");
double itemp = Double.parseDouble(itemPrice);
String[] itemQuantity = {"1", "2", "3", "4", "5"};
String itemq = (String)JOptionPane.showInputDialog(null,"Enter Quantity", "Welcome", JOptionPane.QUESTION_MESSAGE, null, itemQuantity, "1");
String itemsPriority = JOptionPane.showInputDialog("Enter Priority");
int itempry = Integer.parseInt(itemsPriority);
ShoppingList shoppingList = new ShoppingList(input,itemp, itemq, itempry);
shoppingList.show();
}
}
class ShoppingList
{
String itemNames;
double itemPrice;
String itemQuantity;
int itemsPriority;
public ShoppingList()
{
}
public ShoppingList ( String name, double price, String quantity, int priority)
{
itemNames = name;
itemPrice = price;
itemQuantity = quantity;
itemsPriority = priority;
}
public void setitemNames(String name)
{
itemNames = name;
}
public String getitemNames()
{
return itemNames;
}
public void setitemPrice(double price)
{
itemPrice = price;
}
public double getitemPrice()
{
return itemPrice;
}
/*public void setitemQuantity(int quantity)
{
itemQuantity = quantity;
}
public int getitemQuantity()
{
return itemQuantity;
}*/
public void setitemsPriority(int priority)
{
itemsPriority = priority;
}
public int getitemsPriority()
{
return itemsPriority;
}
public void show()
{
System.out.println(itemNames);
System.out.println(itemPrice);
System.out.println(itemQuantity);
System.out.println(itemsPriority);
}
}
最佳答案
您可以将输出包装在 HTML 中并让 Swing 呈现它...
public void show() {
StringBuilder sb = new StringBuilder(64);
sb.append("<html><table><tr><td>Item</td><td>Price</td><td>Quantity</td><td></td>Priority</tr>");
sb.append("<tr>");
sb.append("<td>").append(itemNames).append("</td>");
sb.append("<td>").append(itemPrice).append("</td>");
sb.append("<td>").append(itemQuantity).append("</td>");
sb.append("<td>").append(itemsPriority).append("</td>");
sb.append("</tr></table></html>");
JOptionPane.showMessageDialog(null, sb);
}
现在，我将创建一种方法，该方法能够获取一个或多个 ShoppingLists 并使用类似的方法，循环遍历每个购物列表并从中创建一个新行。
关于java - 在 JOptionPane 中显示数组，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/13926545/