我正在尝试让我的GUI中的删除按钮工作，但它不想以它需要的方式工作。它应该从列表中删除我当前选择的数组列表项，但它只是移动到下一个项目。
我做错了什么？
import java.util.ArrayList;
public class product {
@SuppressWarnings("all")
ArrayList <extendedDVD> product() {
ArrayList<extendedDVD> dvd = new ArrayList<extendedDVD>(); //New Array Constructor
dvd.add(new extendedDVD("The Change Up", 12, 11.86, 10452)); //Index
dvd.add(new extendedDVD("Wall-E", 15, 9.05, 10356)); //Index
dvd.add(new extendedDVD("Flubber", 13, 7.01, 13698)); //Index
dvd.add(new extendedDVD("Daddy Day Care", 14, 9.15, 15496)); //Index
return dvd;
}
public static void main(String [] args) //Main Method
{
GUI mainbox = new GUI();
mainbox.setVisible(true);
}//end main method
}// end class Product
class DVD {
String dvdTitle; //Variable
int dvdStock; //Variable
double dvdPrice; //Variable
int dvdItem; //Variable
public DVD(String title, int stock, double price, int item) //Method Constructor
{
dvdTitle = title;
dvdStock = stock;
dvdPrice = price;
dvdItem = item;
} //end four-argument constructor
public DVD() //Method
{
dvdTitle = ""; //Value Type
dvdStock = 0; //Value Type
dvdPrice = 0.0; //Value Type
dvdItem = 0; //Value Type
} //end four-argument constructor
// set DVD name
public void setDvdTitle(String title) //Method
{
dvdTitle = title;
} //end method setDvdTitle
//return DVD Title
public String getDvdTitle() //Method
{
return dvdTitle;
} //end method getDvdTitle
//set DVD Stock
public void setDvdStock(int stock) //Method
{
dvdStock = stock;
} //end method setDvdStock
//return DvdStock
public int getDvdStock() //Method
{
return dvdStock;
} //end method getDvdStock
public void setDvdPrice(double price) //Method
{
dvdPrice = price;
} //end method setDvdPrice
//return dvdPrice
public double getDvdPrice() //Method
{
return dvdPrice;
} //end method getDvdPrice
public void setDvdItem(int item) //Method
{
dvdItem = item;
} //end method setdvdItem
//return DVD item
public int getDvdItem() //Method
{
return dvdItem;
} //end method getDvdItem
//calculate inventory value
// v v v v v v v
public double value() //Method
{
return dvdPrice * dvdStock;
} //end method value
/* public double valueTotal(extendedDVD[] item) //Method
{
double iTotal = 0.0;
for (int i = 0; i < item.length; i++) // "for" Argument
{
iTotal = iTotal + item[i].value();
}
return iTotal;
} //end method value*/
public int compareTo(DVD d) //Method
{
int lastCmp = dvdTitle.compareTo(d.dvdTitle);
return (lastCmp != 0 ? lastCmp : dvdTitle.compareTo(d.dvdTitle));
}// end method value
} //end class DVD
class extendedDVD extends DVD {
public extendedDVD(String title, int stock, double price, int item) //Method
{
super(title, stock, price, item);
} // end method value
public double restockFee() //Method
{
return getDvdPrice() * .05;
}//end method value
public double totalRestock() //Method
{
return restockFee() + getDvdPrice();
} // end method value
}// end class extendedDVD
import java.awt.Color;
import java.awt.Font;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Scanner;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JTextPane;
import javax.swing.SwingConstants;
@SuppressWarnings("serial")
public class GUI extends JFrame {
int Index = 0;
private final JTextPane textTitle;
private final JTextPane textItem;
private final JTextPane textStock;
private final JTextPane textPrice;
private final JTextPane textFee;
private final JTextPane textTpro;
product mainBox = new product();
public GUI() {
setIconImage(Toolkit.getDefaultToolkit().getImage("C:\\Users\\Margaret\\workspace\\FinalGUI\\ResImgs\\CenterLogo.png"));
getContentPane().setBackground(Color.DARK_GRAY);
setTitle("UniMedia: DVD Inventory");
setSize(900, 450);
setLocationRelativeTo(null);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setResizable(false);
getContentPane().setLayout(null);
JButton btnFirst = new JButton("");
btnFirst.setToolTipText("Go to First DVD");
btnFirst.setIcon(new ImageIcon("C:\\Users\\Margaret\\workspace\\FinalGUI\\ResImgs\\FirstArrow.png"));
btnFirst.setContentAreaFilled(false);
btnFirst.setFocusPainted(false);
btnFirst.setBorderPainted(false);
btnFirst.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent click) {
Index = 0;
setValues();//refreshes values to new index
}
});
btnFirst.setBounds(10, 360, 38, 40);
getContentPane().add(btnFirst);
JButton btnPrevious = new JButton("");
btnPrevious.setIcon(new ImageIcon("C:\\Users\\Margaret\\workspace\\FinalGUI\\ResImgs\\PreviousArrow.png"));
btnPrevious.setContentAreaFilled(false);
btnPrevious.setFocusPainted(false);
btnPrevious.setBorderPainted(false);
btnPrevious.setToolTipText("Go to Previous DVD");
btnPrevious.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent click) {
if(Index == 0) {
Index = mainBox.product().size() - 1;
setValues();//refreshes values to new index
} else {
Index--;//index - 1
setValues();//refreshes values to new index
}
}
});
btnPrevious.setBounds(135, 359, 38, 40);
getContentPane().add(btnPrevious);
JButton btnNext = new JButton("");
btnNext.setToolTipText("Go to Next DVD");
btnNext.setIcon(new ImageIcon("C:\\Users\\Margaret\\workspace\\FinalGUI\\ResImgs\\Next Arrow.png"));
btnNext.setContentAreaFilled(false);
btnNext.setFocusPainted(false);
btnNext.setBorderPainted(false);
btnNext.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent click) {
if(Index == mainBox.product().size() - 1) {
Index = 0;
setValues();//refreshes values to new index
} else {
Index++;//index + 1
setValues();//refreshes values to new index
}
}
});
btnNext.setBounds(209, 359, 38, 40);
getContentPane().add(btnNext);
JButton btnLast = new JButton("");
btnLast.setToolTipText("Go to Last DVD");
btnLast.setIcon(new ImageIcon("C:\\Users\\Margaret\\workspace\\FinalGUI\\ResImgs\\LastArrow.png"));
btnLast.setContentAreaFilled(false);
btnLast.setFocusPainted(false);
btnLast.setBorderPainted(false);
btnLast.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent click) {
Index = mainBox.product().size() - 1;
setValues();//refreshes values to new index
}
});
btnLast.setBounds(353, 360, 34, 35);
getContentPane().add(btnLast);
JLabel lblNewLabel = new JLabel("Title:");
lblNewLabel.setForeground(new Color(0, 206, 209));
lblNewLabel.setFont(new Font("Segoe UI", Font.ITALIC, 13));
lblNewLabel.setBounds(602, 23, 46, 14);
getContentPane().add(lblNewLabel);
JLabel lblNewLabel_1 = new JLabel("Item #:");
lblNewLabel_1.setForeground(new Color(0, 206, 209));
lblNewLabel_1.setFont(new Font("Segoe UI", Font.ITALIC, 13));
lblNewLabel_1.setBounds(602, 58, 46, 14);
getContentPane().add(lblNewLabel_1);
JLabel lblNewLabel_2 = new JLabel("Stock:");
lblNewLabel_2.setForeground(new Color(0, 206, 209));
lblNewLabel_2.setFont(new Font("Segoe UI", Font.ITALIC, 13));
lblNewLabel_2.setBounds(602, 93, 46, 14);
getContentPane().add(lblNewLabel_2);
JLabel lblNewLabel_3 = new JLabel("Price:");
lblNewLabel_3.setForeground(new Color(0, 206, 209));
lblNewLabel_3.setFont(new Font("Segoe UI", Font.ITALIC, 13));
lblNewLabel_3.setBounds(602, 127, 46, 14);
getContentPane().add(lblNewLabel_3);
textTitle = new JTextPane();
textTitle.setFont(new Font("Eras Light ITC", Font.ITALIC, 15));
textTitle.setForeground(Color.WHITE);
textTitle.setBackground(Color.DARK_GRAY);
textTitle.setEditable(false);
textTitle.setBounds(746, 15, 124, 20);
getContentPane().add(textTitle);
textItem = new JTextPane();
textItem.setForeground(Color.WHITE);
textItem.setFont(new Font("Segoe UI Light", Font.PLAIN, 15));
textItem.setBackground(Color.DARK_GRAY);
textItem.setEditable(false);
textItem.setBounds(746, 52, 124, 20);
getContentPane().add(textItem);
textStock = new JTextPane();
textStock.setForeground(Color.WHITE);
textStock.setFont(new Font("Segoe UI Light", Font.PLAIN, 15));
textStock.setBackground(Color.DARK_GRAY);
textStock.setEditable(false);
textStock.setBounds(746, 87, 124, 20);
getContentPane().add(textStock);
textPrice = new JTextPane();
textPrice.setForeground(Color.WHITE);
textPrice.setFont(new Font("Segoe UI Light", Font.PLAIN, 15));
textPrice.setBackground(Color.DARK_GRAY);
textPrice.setEditable(false);
textPrice.setBounds(746, 121, 124, 20);
getContentPane().add(textPrice);
JLabel lblNewLabel_4 = new JLabel("Restock Fee : 5%");
lblNewLabel_4.setForeground(new Color(0, 206, 209));
lblNewLabel_4.setFont(new Font("Segoe UI", Font.ITALIC, 13));
lblNewLabel_4.setBounds(602, 183, 110, 14);
getContentPane().add(lblNewLabel_4);
JLabel lblNewLabel_5 = new JLabel("Total:");
lblNewLabel_5.setForeground(new Color(0, 206, 209));
lblNewLabel_5.setFont(new Font("Segoe UI", Font.ITALIC, 13));
lblNewLabel_5.setBounds(602, 232, 46, 14);
getContentPane().add(lblNewLabel_5);
textFee = new JTextPane();
textFee.setForeground(Color.WHITE);
textFee.setFont(new Font("Segoe UI Light", Font.PLAIN, 15));
textFee.setBackground(Color.DARK_GRAY);
textFee.setEditable(false);
textFee.setBounds(761, 183, 109, 20);
getContentPane().add(textFee);
textTpro = new JTextPane();
textTpro.setForeground(Color.WHITE);
textTpro.setFont(new Font("Segoe UI Light", Font.PLAIN, 15));
textTpro.setBackground(Color.DARK_GRAY);
textTpro.setEditable(false);
textTpro.setBounds(761, 232, 109, 20);
getContentPane().add(textTpro);
JLabel lblTotalInventoryValue = new JLabel("Total Inventory Value ->");
lblTotalInventoryValue.setForeground(Color.LIGHT_GRAY);
lblTotalInventoryValue.setFont(new Font("Segoe UI", Font.ITALIC, 11));
lblTotalInventoryValue.setBounds(685, 382, 139, 29);
getContentPane().add(lblTotalInventoryValue);
setValues();
/* Set outside of the other method to avoid infinite adding cycle with next/previous/last/first buttons */
//textTinv.setText(String.format("$%.2f", valueTotal()));
JButton btnTotalInv = new JButton("");
btnTotalInv.setIcon(new ImageIcon("C:\\Users\\Margaret\\workspace\\FinalGUI\\ResImgs\\TotalInventory.png"));
btnTotalInv.setContentAreaFilled(false);
btnTotalInv.setFocusPainted(false);
btnTotalInv.setBorderPainted(false);
btnTotalInv.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
JOptionPane.showMessageDialog(null, "The Inventory Total Is: " + String.format("$%.2f",valueTotal()),null, JOptionPane.INFORMATION_MESSAGE);
}
});
btnTotalInv.setBounds(824, 371, 46, 40);
getContentPane().add(btnTotalInv);
JLabel lblNewLabel_6 = new JLabel("");
lblNewLabel_6.setIcon(new ImageIcon("C:\\Users\\Margaret\\workspace\\FinalGUI\\ResImgs\\CenterLogo.png"));
lblNewLabel_6.setBounds(108, 58, 100, 100);
setVisible(true);
getContentPane().add(lblNewLabel_6);
JLabel lblNewLabel_7 = new JLabel("");
lblNewLabel_7.setIcon(new ImageIcon("C:\\Users\\Margaret\\workspace\\FinalGUI\\ResImgs\\UniMedia.gif"));
lblNewLabel_7.setBounds(59, 0, 200, 214);
getContentPane().add(lblNewLabel_7);
JLabel lblUnimedia = new JLabel("UniMedia");
lblUnimedia.setFont(new Font("Eras Demi ITC", Font.ITALIC, 39));
lblUnimedia.setBounds(69, 202, 253, 58);
getContentPane().add(lblUnimedia);
JButton btnSave = new JButton("");
btnSave.setContentAreaFilled(false);
btnSave.setFocusPainted(false);
btnSave.setBorderPainted(false);
btnSave.setIcon(new ImageIcon("C:\\Users\\Margaret\\workspace\\FinalGUI\\ResImgs\\SaveData.png"));
btnSave.setBounds(845, 280, 25, 31);
btnSave.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
try{
cFile x = new cFile();
x.openFile();
x.addRecords();
//x.closeFile();
}catch(Exception e){
JOptionPane.showMessageDialog(null, "COULD NOT CREATE FILE OR DIRECTORY!",null,JOptionPane.ERROR_MESSAGE);
}
}
});
getContentPane().add(btnSave);
JButton btnEdit = new JButton("");
btnEdit.setIcon(new ImageIcon("C:\\Users\\Margaret\\workspace\\FinalGUI\\ResImgs\\EditData.png"));
btnEdit.setContentAreaFilled(false);
btnEdit.setFocusPainted(false);
btnEdit.setBorderPainted(false);
btnEdit.setBounds(735, 280, 25, 31);
getContentPane().add(btnEdit);
JButton btnDelete = new JButton("");
btnDelete.setIcon(new ImageIcon("C:\\Users\\Margaret\\workspace\\FinalGUI\\ResImgs\\Delete.png"));
btnDelete.setContentAreaFilled(false);
btnDelete.setFocusPainted(false);
btnDelete.setBorderPainted(false);
btnDelete.setBounds(697, 283, 25, 23);
btnDelete.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
JOptionPane.showMessageDialog(null,"Entry Deleted!"); //THIS CODE ISNT WORKING!!!
while (Index == 0) {
try{
if (Index >= 0){
//Index = mainBox.product().remove(Index);
Index = Index -1;
Index = mainBox.product().size() - 1;
setValues();
}else
JOptionPane.showMessageDialog(null,"ENTRY COULD NOT BE DELETED!");
}catch (Exception ex){
JOptionPane.showMessageDialog(null,"Error Compiling! Fix your Code!");
}
}
}
});
getContentPane().add(btnDelete);
JLabel lblSearch = new JLabel("Search:");
lblSearch.setFont(new Font("Segoe UI Light", Font.ITALIC, 11));
lblSearch.setForeground(new Color(32, 178, 170));
lblSearch.setHorizontalAlignment(SwingConstants.CENTER);
lblSearch.setBounds(376, 23, 46, 14);
getContentPane().add(lblSearch);
JButton btnSearch = new JButton("Search");
btnSearch.addActionListener(new ActionListener() {
Scanner a = new Scanner(System.in);
public void actionPerformed(ActionEvent e) {
JOptionPane.showInputDialog(null,"Enter DVD Title");
a.nextLine();
}
});
btnSearch.setBounds(433, 20, 89, 23);
getContentPane().add(btnSearch);
}
public void setValues() {
extendedDVD col = mainBox.product().get(Index);
textTitle.setText(String.valueOf(col.getDvdTitle()));
textItem.setText(String.valueOf(col.getDvdItem()));
textPrice.setText(String.format("$%.2f", col.getDvdPrice()));
textStock.setText(String.valueOf(col.getDvdStock()));
textFee.setText(String.format("$%.2f", col.restockFee()));
textTpro.setText(String.format("$%.2f", col.value()));
}
private double valueTotal() {
double tVal = 0;
for (extendedDVD col : mainBox.product()) {
tVal += col.value();
}
return tVal;
}
}