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나는 학교 프로젝트를위한 재고 관리 시스템 프로그램을 쓰고있다. 이것이 내가해야 할 마지막 일이지만, 상대방 자바 멍청한 놈으로 보아서, 나는 너의 도움을 친절히 요청한다.actionPerformed에서 호출 된 메서드에 객체 인수를 전달하는 방법은 무엇입니까?
나는 Search 클래스의 "search"JTextField에서 String 입력을 가져 와서 링크 된 Object (Product p)를 찾고 displayRecord 메소드에 전달하여 생성되는 DisplayRecord 클래스를가집니다. 이 부분은 완벽하게 작동합니다.
나는 해당 제품 p를 가져 와서 EditProduct 클래스 나 DeleteRecord 클래스 (JButton이 눌려진 것에 따라 다름)에 전달하여 사용자가 동일한 제품의 이름, 수량 또는 비용을 편집 할 수있게하려고합니다. 다음은 DisplayRecord, EditProduct 및 DeleteRecord 클래스입니다. 나는 무엇을해야할지 모른다. DeleteRecord 클래스 Aaand
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.FocusEvent;
import java.awt.event.FocusListener;
import java.util.ArrayList;
import javax.swing.BorderFactory;
import javax.swing.Box;
import javax.swing.BoxLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;
public class EditProduct extends JFrame implements FocusListener, ActionListener {
final private StockList stocks;
final private ArrayList<Product> list;
JPanel top, bot;
JLabel nameLabel, costLabel, quantityLabel = new JLabel();
JTextField nameField, costField, quantityField = new JTextField();
JButton save, quit = new JButton();
private GridLayout topLayout;
public EditProduct() {
stocks = new StockList();
list = stocks.getList();
}
public void editProduct(Product p) {
this.setTitle("Editing a Product");
this.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
this.setPreferredSize(new Dimension(500, 250));
top = new JPanel();
topLayout = new GridLayout(3, 2, 5, 5);
top.setBorder(BorderFactory.createEmptyBorder(5, 20, 5, 5));
top.setLayout(topLayout);
bot = new JPanel();
bot.setLayout(new BoxLayout(bot, BoxLayout.LINE_AXIS));
bot.add(Box.createHorizontalGlue());
bot.setBorder(BorderFactory.createEmptyBorder(20, 5, 5, 5));
nameLabel.setText("Name: ");
costLabel.setText("Cost: ");
quantityLabel.setText("Quantity: ");
top.add(nameLabel);
top.add(costLabel);
top.add(quantityLabel);
nameField = new JTextField(p.getName());
costField = new JTextField(String.valueOf(p.getCost()));
quantityField = new JTextField(p.getQuantity());
nameField.addFocusListener(this);
costField.addFocusListener(this);
quantityField.addFocusListener(this);
save.setText("Save");
save.addActionListener(this);
quit.setText("Quit");
quit.addActionListener(this);
bot.add(save);
bot.add(Box.createRigidArea(new Dimension(10, 0)));
bot.add(quit);
this.add(top);
this.add(bot, BorderLayout.SOUTH);
this.pack();
this.setLocationRelativeTo(null);
this.setVisible(true);
}
@Override
public void focusGained(FocusEvent e) {
if (e.getSource() == nameField) {
nameField.setText("");
} else if (e.getSource() == costField) {
costField.setText("");
} else if (e.getSource() == quantityField) {
quantityField.setText("");
}
}
@Override
public void focusLost(FocusEvent fe) {
//do nothing
}
@Override
public void actionPerformed(ActionEvent e) {
if (e.getSource() == save) {
String newName = nameField.getText();
double newCost = Double.parseDouble(costField.getText());
int newQty = Integer.parseInt(quantityField.getText());
stocks.editProduct(newName, newCost, newQty);
this.dispose();
JOptionPane.showMessageDialog(null, "Changes have been saved!", "Saved!", JOptionPane.PLAIN_MESSAGE);
} else if (e.getSource() == quit) {
}
}
}
:
import java.util.ArrayList;
import javax.swing.JOptionPane;
public class DeleteRecord {
private StockList stocks;
private ArrayList<Product> list;
public DeleteRecord() {
stocks = new StockList();
list = stocks.getList();
}
public DeleteRecord(Product p) {
String title = "Are you sure you want to delete " + p.getName() + "?";
if (JOptionPane.showConfirmDialog(null, title, "Deleting...", JOptionPane.YES_NO_OPTION) == JOptionPane.YES_OPTION) {
stocks.deleteRecord(p);
} else {
new CreateDisplay();
}
}
}
나는 대규모 포스트 및 텍스트 벽 죄송하지만 솔직히 아무 생각이 내 문제
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.IOException;
import java.util.ArrayList;
public class DisplayRecord extends JFrame implements ActionListener {
final private StockList stocks;
final private ArrayList<Product> list;
JFrame showWindow;
private JPanel top, bot;
private JPanel barcodePanel1 = new JPanel();
private JPanel barcodePanel2 = new JPanel();
private JPanel namePanel1 = new JPanel();
private JPanel namePanel2 = new JPanel();
private JPanel descPanel1 = new JPanel();
private JPanel descPanel2 = new JPanel();
private JPanel compPanel1 = new JPanel();
private JPanel compPanel2 = new JPanel();
private JPanel ratingPanel1 = new JPanel();
private JPanel ratingPanel2 = new JPanel();
private JPanel costPanel1 = new JPanel();
private JPanel costPanel2 = new JPanel();
private JPanel quantityPanel1 = new JPanel();
private JPanel quantityPanel2 = new JPanel();
private JLabel barcodeLabel = new JLabel();
private JLabel nameLabel = new JLabel();
private JLabel descLabel = new JLabel();
private JLabel compLabel = new JLabel();
private JLabel ratingLabel = new JLabel();
private JLabel costLabel = new JLabel();
private JLabel quantityLabel = new JLabel();
private GridLayout displayLayout;
JButton edit = new JButton("Edit");
JButton backToMenu = new JButton("Back to Menu");
JButton delete = new JButton("Delete");
public DisplayRecord() {
stocks = new StockList();
list = stocks.getList();
try {
stocks.load();
} catch (IOException ex) {
System.out.println("Cannot load file");
}
}
public void displayRecord(Product p) {
this.setTitle("Displaying one record");
this.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
this.setPreferredSize(new Dimension(500, 350));
top = new JPanel();
displayLayout = new GridLayout(7, 2, 2, 2);
top.setLayout(displayLayout);
top.setBorder(BorderFactory.createEmptyBorder(5, 20, 5, 5));
bot = new JPanel();
bot.setLayout(new BoxLayout(bot, BoxLayout.LINE_AXIS));
bot.add(Box.createHorizontalGlue());
bot.setBorder(BorderFactory.createEmptyBorder(20, 5, 5, 5));
barcodeLabel.setText("Barcode: ");
nameLabel.setText("Name: ");
descLabel.setText("Description: ");
compLabel.setText("Developer: ");
ratingLabel.setText("EU Rating: ");
costLabel.setText("Cost: ");
quantityLabel.setText("Quantity in Stock: ");
JLabel barcodeField = new JLabel(Long.toString(p.getBarcode()));
JLabel nameField = new JLabel(p.getName());
JLabel descField = new JLabel(p.getDesc());
JLabel compField = new JLabel(p.getCompany());
JLabel ratingField = new JLabel(p.getRating());
JLabel costField = new JLabel(Double.toString(p.getCost()));
JLabel quantityField = new JLabel(Integer.toString(p.getQuantity()));
barcodePanel1.add(barcodeLabel);
barcodePanel1.setBorder(BorderFactory.createLineBorder(Color.black));
barcodePanel2.add(barcodeField); barcodePanel2.setBorder(BorderFactory.createLineBorder(Color.black));
namePanel1.add(nameLabel);
namePanel1.setBorder(BorderFactory.createLineBorder(Color.black));
namePanel2.add(nameField);
namePanel2.setBorder(BorderFactory.createLineBorder(Color.black));
descPanel1.add(descLabel);
descPanel1.setBorder(BorderFactory.createLineBorder(Color.black));
descPanel2.add(descField);
descPanel2.setBorder(BorderFactory.createLineBorder(Color.black));
compPanel1.add(compLabel);
compPanel1.setBorder(BorderFactory.createLineBorder(Color.black));
compPanel2.add(compField);
compPanel2.setBorder(BorderFactory.createLineBorder(Color.black));
ratingPanel1.add(ratingLabel);
ratingPanel1.setBorder(BorderFactory.createLineBorder(Color.black));
ratingPanel2.add(ratingField);
ratingPanel2.setBorder(BorderFactory.createLineBorder(Color.black));
costPanel1.add(costLabel);
costPanel1.setBorder(BorderFactory.createLineBorder(Color.black));
costPanel2.add(costField);
costPanel2.setBorder(BorderFactory.createLineBorder(Color.black));
quantityPanel1.add(quantityLabel);
quantityPanel1.setBorder(BorderFactory.createLineBorder(Color.black));
quantityPanel2.add(quantityField);
quantityPanel2.setBorder(BorderFactory.createLineBorder(Color.black));
top.add(barcodePanel1);
top.add(barcodePanel2);
top.add(namePanel1);
top.add(namePanel2);
top.add(descPanel1);
top.add(descPanel2);
top.add(compPanel1);
top.add(compPanel2);
top.add(ratingPanel1);
top.add(ratingPanel2);
top.add(costPanel1);
top.add(costPanel2);
top.add(quantityPanel1);
top.add(quantityPanel2);
edit.addActionListener(this);
delete.addActionListener(this);
backToMenu.addActionListener(this);
bot.add(edit);
bot.add(Box.createRigidArea(new Dimension(10, 0)));
bot.add(delete);
bot.add(Box.createRigidArea(new Dimension(10, 0)));
bot.add(backToMenu);
this.add(top);
this.add(bot, BorderLayout.SOUTH);
this.setLocationRelativeTo(null);
this.pack();
this.setVisible(true);
}
@Override
public void actionPerformed(ActionEvent e) { // here is where I'd LIKE to pass Product p as parameter but obviously that's not a thing
if (e.getSource() == edit) {
// EditProduct ed = new EditProduct(); <- hypothetical!
// ed.editProduct(p);
} else if (e.getSource() == delete) {
// DeleteRecord del = new DeleteRecord(); <- hypothetical!
// del.deleteRecord(p);
} else if (e.getSource() == backToMenu) {
new CreateDisplay();
this.dispose();
}
}
}
내 EditProduct 클래스
또는이 문제를 해결하는 방법입니다 (그리고 StackOverflow를 처음 접했습니다). 누구든지 나를 도울 수 있습니까?
'StackOverflow'에 새로 도입되었습니다. StackOverflow에 오신 것을 환영합니다! ** ☺ ** –
@PaulVargas 감사합니다! 나는 아직도 이해하려고 노력하고 있지만이 사이트를 좋아한다. – jammededed