java中GUI的增删改查（不连接数据库）

饲料添加剂信息管理系统
【问题描述】

某饲料添加剂公司需要对所生产的饲料添加剂进行管理。【实现要求】
能够对饲料添加剂（包括编号，名称、主要成分、功效、使用方法和适用对象、单价）
进行增删查改。还应该能对具体的应用情况（客户信息，喂食及使用效果）进行跟踪反馈。
【实现提示】
略名
【选作内容】
GUI 界面实现，其他不在实现要求范围内的功能。

回答：在上个答主的基础上修改了一下；效果如下：

package manage;

/**
 * @author bbyh
 * @date 2022/12/29 0029 17:25
 * @description
 */
public class Fodder {
    private String id;
    private String name;
    private String ingredients;
    private String effects;
    private String usage;
    private String target;
    private double price;

    public Fodder(String id, String name, String ingredients, String effects, String usage, String target, double price) {
        this.id = id;
        this.name = name;
        this.ingredients = ingredients;
        this.effects = effects;
        this.usage = usage;
        this.target = target;
        this.price = price;
    }

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getIngredients() {
        return ingredients;
    }

    public void setIngredients(String ingredients) {
        this.ingredients = ingredients;
    }

    public String getEffects() {
        return effects;
    }

    public void setEffects(String effects) {
        this.effects = effects;
    }

    public String getUsage() {
        return usage;
    }

    public void setUsage(String usage) {
        this.usage = usage;
    }

    public String getTarget() {
        return target;
    }

    public void setTarget(String target) {
        this.target = target;
    }

    public double getPrice() {
        return price;
    }

    public void setPrice(double price) {
        this.price = price;
    }
}

package manage;

import javax.swing.*;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.DefaultTableModel;
import java.awt.*;
import java.util.ArrayList;
import java.util.List;

/**
 * @author bbyh
 * @date 2022/12/29 0029 17:48
 * @description
 */
public class FodderWindow extends JFrame {
    private final JTextField idField = new JTextField();
    private final JTextField nameField = new JTextField();
    private final JTextField ingredientsField = new JTextField();
    private final JTextField effectsField = new JTextField();
    private final JTextField usageField = new JTextField();
    private final JTextField targetField = new JTextField();
    private final JTextField priceField = new JTextField();

    private final JTable table = new JTable();

    private final List<Fodder> additives = new ArrayList<>();

    public FodderWindow() {
        setLayout(new BorderLayout());

        JPanel southPanel = new JPanel();
        southPanel.setLayout(new GridLayout(2, 1));
        add(southPanel, BorderLayout.SOUTH);

        JPanel filedPanel = new JPanel();
        filedPanel.setLayout(new GridLayout(7, 2));
        southPanel.add(filedPanel);

        // 添加Label和TextField
        JLabel idLabel = new JLabel("编号");
        JLabel nameLabel = new JLabel("名称");
        JLabel ingredientsLabel = new JLabel("主要成分");
        JLabel effectsLabel = new JLabel("功效");
        JLabel usageLabel = new JLabel("使用方法");
        JLabel targetLabel = new JLabel("适用对象");
        JLabel priceLabel = new JLabel("单价");

        filedPanel.add(idLabel);
        filedPanel.add(idField);

        filedPanel.add(nameLabel);
        filedPanel.add(nameField);

        filedPanel.add(ingredientsLabel);
        filedPanel.add(ingredientsField);

        filedPanel.add(effectsLabel);
        filedPanel.add(effectsField);

        filedPanel.add(usageLabel);
        filedPanel.add(usageField);

        filedPanel.add(targetLabel);
        filedPanel.add(targetField);

        filedPanel.add(priceLabel);
        filedPanel.add(priceField);

        JPanel buttonPanel = new JPanel();
        buttonPanel.setLayout(new FlowLayout());
        southPanel.add(buttonPanel);

        JButton addButton = new JButton("添加");
        addButton.addActionListener(e -> {
            String id = idField.getText();
            String name = nameField.getText();
            String ingredients = ingredientsField.getText();
            String effects = effectsField.getText();
            String usage = usageField.getText();
            String target = targetField.getText();
            double price;
            try {
                price = Double.parseDouble(priceField.getText());
            } catch (NumberFormatException ex) {
                throw new UnsupportedOperationException("单价需要输入数字");
            }

            Fodder additive = new Fodder(id, name, ingredients, effects, usage, target, price);

            additives.add(additive);
            updateTable();
        });

        JButton deleteButton = new JButton("删除");
        deleteButton.addActionListener(e -> {
            String id = idField.getText();

            for (int i = 0; i < additives.size(); i++) {
                if (additives.get(i).getId().equals(id)) {
                    additives.remove(i);
                    break;
                }
            }

            updateTable();
        });

        JButton updateButton = new JButton("修改");
        updateButton.addActionListener(e -> {
            String id = idField.getText();
            for (Fodder additive : additives) {
                if (additive.getId().equals(id)) {
                    additive.setName(nameField.getText());
                    additive.setIngredients(ingredientsField.getText());
                    additive.setEffects(effectsField.getText());
                    additive.setUsage(usageField.getText());
                    additive.setTarget(targetField.getText());
                    additive.setPrice(Double.parseDouble(priceField.getText()));
                    break;
                }
            }
            updateTable();
        });

        JButton searchButton = new JButton("查询");
        searchButton.addActionListener(e -> {
            String id = idField.getText();
            for (Fodder additive : additives) {
                if (additive.getId().equals(id)) {
                    nameField.setText(additive.getName());
                    ingredientsField.setText(additive.getIngredients());
                    effectsField.setText(additive.getEffects());
                    usageField.setText(additive.getUsage());
                    targetField.setText(additive.getTarget());
                    priceField.setText(Double.toString(additive.getPrice()));
                    break;
                }
            }
        });

        buttonPanel.add(addButton);
        buttonPanel.add(deleteButton);
        buttonPanel.add(updateButton);
        buttonPanel.add(searchButton);

        Font font = new Font("楷体", Font.BOLD, 18);
        idLabel.setFont(font);
        idField.setFont(font);
        nameLabel.setFont(font);
        nameField.setFont(font);
        ingredientsLabel.setFont(font);
        ingredientsField.setFont(font);
        effectsLabel.setFont(font);
        effectsField.setFont(font);
        usageLabel.setFont(font);
        usageField.setFont(font);
        targetLabel.setFont(font);
        targetField.setFont(font);
        priceLabel.setFont(font);
        priceField.setFont(font);

        addButton.setFont(font);
        deleteButton.setFont(font);
        updateButton.setFont(font);
        searchButton.setFont(font);

        // 添加表格
        updateTable();
        table.getTableHeader().setFont(font);
        table.setFont(font);
        DefaultTableCellRenderer dc = new DefaultTableCellRenderer();
        dc.setHorizontalAlignment(JLabel.CENTER);
        table.setDefaultRenderer(Object.class, dc);

        add(new JScrollPane(table), BorderLayout.CENTER);
    }

    private void updateTable() {
        // 创建表格模型
        DefaultTableModel model = new DefaultTableModel();

        model.addColumn("编号");
        model.addColumn("名称");
        model.addColumn("主要成分");
        model.addColumn("功效");
        model.addColumn("使用方法");
        model.addColumn("适用对象");
        model.addColumn("单价");

        // 遍历列表，将饲料添加剂信息添加到表格中
        for (Fodder additive : additives) {
            model.addRow(new Object[]{additive.getId(), additive.getName(), additive.getIngredients(),
                    additive.getEffects(), additive.getUsage(), additive.getTarget(), additive.getPrice()});
        }

        // 设置表格的模型
        table.setModel(model);
    }
}

package manage;

import javax.swing.*;

/**
 * @author bbyh
 * @date 2022/12/29 0029 18:00
 * @description
 */
public class MainFrame {
    public static void main(String[] args) {
        FodderWindow frame = new FodderWindow();

        frame.setTitle("饲料添加剂信息管理系统");
        frame.setSize(1200, 700);
        frame.setLocationRelativeTo(null);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);
    }
}

首先定义一个类来保存饲料添加剂的信息，例如编号、名称、主要成分等。

{
private
    String id;
private
    String name;
private
    String ingredients;
private
    String effects;
private
    String usage;
private
    String target;
private
    double price;

    // 构造函数和 getter 和 setter 省略
}
``` 然后，定义一个窗口类来显示 GUI 界面，包括文本框、按钮、表格等。
``` public class FeedAdditiveWindow extends JFrame
{
private
    JTextField idField;
private
    JTextField nameField;
private
    JTextField ingredientsField;
private
    JTextField effectsField;
private
    JTextField usageField;
private
    JTextField targetField;
private
    JTextField priceField;

private
    JButton addButton;
private
    JButton deleteButton;
private
    JButton updateButton;
private
    JButton searchButton;

private
    JTable table;

private
    List<FeedAdditive> additives; // 保存饲料添加剂信息的列表

    // 省略构造函数和初始化代码
}

接下来，为文本框、按钮和表格添加事件监听器，实现增删查改功能。

addButton.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent e) {
        // 获取文本框中的信息
        String id = idField.getText();
        String name = nameField.getText();
        String ingredients = ingredientsField.getText();
        String effects = effectsField.getText();
        String usage = usageField.getText();
        String target = targetField.getText();
        double price = Double.parseDouble(priceField.getText());
 
        // 创建新的饲料添加剂对象
        FeedAdditive additive = new FeedAdditive(id, name, ingredients, effects, usage, target, price);
 
        // 将新的饲料添加剂对象添加到列表中
additives.add(additive);

    // 刷新表格中的数据
    updateTable();
}
});

deleteButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
// 获取文本框中的编号
String id = idField.getText();

    // 遍历列表，找到编号相同的饲料添加剂对象
    for (int i = 0; i < additives.size(); i++) {
    if (additives.get(i).getId().equals(id))
    {
        // 从列表中删除这个对象
        additives.remove(i);
        break;
    }
    }

    // 刷新表格中的数据
    updateTable();
}
});

updateButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
// 获取文本框中的编号
String id = idField.getText();

    // 遍历列表，找到编号相同的饲料添加剂对象
    for (int i = 0; i < additives.size(); i++) {
    if (additives.get(i).getId().equals(id))
    {
        // 修改这个对象的信息
        additives.get(i).setName(nameField.getText());
        additives.get(i).setIngredients(ingredientsField.getText());
        additives.get(i).setEffects(effectsField.getText());
        additives.get(i).setUsage(usageField.getText());
        additives.get(i).setTarget(targetField.getText());
        additives.get(i).setPrice(Double.parseDouble(priceField.getText()));
        break;
    }
    }

    // 刷新表格中的数据
    updateTable();
}
});

searchButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
// 获取文本框中的编号
String id = idField.getText();

    // 遍历列表，找到编号相同的饲料添加剂对象
    for (int i = 0; i < additives.size(); i++) {
    if (additives.get(i).getId().equals(id))
    {
        // 在文本框中显示这个对象的信息
        nameField.setText(additives.get(i).getName());
        ingredientsField.setText(additives.get(i).getIngredients());
        effectsField.setText(additives.get(i).getEffects());
        usageField.setText(additives.get(i).getUsage());
        targetField.setText(additives.get(i).getTarget());
        priceField.setText(Double.toString(additives.get(i).getPrice()));
        break;
    }
}
}
});

最后，定义一个方法来刷新表格中的数据。

    updateTable()
{
    // 创建表格模型
    DefaultTableModel model = new DefaultTableModel();
    model.addColumn("编号");
    model.addColumn("名称");
    model.addColumn("主要成分");
    model.addColumn("功效");
    model.addColumn("使用方法");
    model.addColumn("适用对象");
    model.addColumn("单价");

    // 遍历列表，将饲料添加剂信息添加到表格中
    for (FeedAdditive additive : additives)
    {
        model.addRow(new Object[]{additive.getId(), additive.getName(), additive.getIngredients(),
                                  additive.getEffects(), additive.getUsage(), additive.getTarget(), additive.getPrice()});
    }

    // 设置表格的模型
    table.setModel(model);
}