java gui宠物饲养系统

下面是一个简单的Java GUI宠物饲养系统的示例代码，仅供参考：

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class PetSystem extends JFrame implements ActionListener {
    private JTextField nameField;
    private JTextField typeField;
    private JTextField ageField;
    private JTextField weightField;
    private JButton addButton;
    private JTextArea petListArea;

    public PetSystem() {
        super("宠物饲养系统");
        setSize(400, 400);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        // 创建添加宠物的组件
        JLabel nameLabel = new JLabel("宠物名称：");
        nameField = new JTextField(20);
        JLabel typeLabel = new JLabel("宠物种类：");
        typeField = new JTextField(20);
        JLabel ageLabel = new JLabel("宠物年龄：");
        ageField = new JTextField(20);
        JLabel weightLabel = new JLabel("宠物体重：");
        weightField = new JTextField(20);
        addButton = new JButton("添加");
        addButton.addActionListener(this);

        // 将添加宠物的组件添加到面板中
        JPanel addPanel = new JPanel(new GridLayout(5, 2));
        addPanel.add(nameLabel);
        addPanel.add(nameField);
        addPanel.add(typeLabel);
        addPanel.add(typeField);
        addPanel.add(ageLabel);
        addPanel.add(ageField);
        addPanel.add(weightLabel);
        addPanel.add(weightField);
        addPanel.add(addButton);

        // 创建宠物列表的组件
        JLabel petListLabel = new JLabel("宠物列表：");
        petListArea = new JTextArea(15, 30);
        petListArea.setEditable(false);
        JScrollPane scrollPane = new JScrollPane(petListArea);
        scrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);

        // 将宠物列表的组件添加到面板中
        JPanel petListPanel = new JPanel(new BorderLayout());
        petListPanel.add(petListLabel, BorderLayout.NORTH);
        petListPanel.add(scrollPane, BorderLayout.CENTER);

        // 将面板添加到窗口中
        JPanel panel = new JPanel(new BorderLayout());
        panel.add(addPanel, BorderLayout.NORTH);
        panel.add(petListPanel, BorderLayout.CENTER);
        add(panel);

        setVisible(true);
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        // 获取用户输入的宠物信息
        String name = nameField.getText();
        String type = typeField.getText();
        int age = Integer.parseInt(ageField.getText());
        double weight = Double.parseDouble(weightField.getText());

        // 创建宠物对象并添加到列表中
        Pet pet = new Pet(name, type, age, weight);
        petListArea.append(pet.toString() + "\n");

        // 清空用户输入的宠物信息
        nameField.setText("");
        typeField.setText("");
        ageField.setText("");
        weightField.setText("");
    }

    public static void main(String[] args) {
        new PetSystem();
    }
}

class Pet {
    private String name;
    private String type;
    private int age;
    private double weight;

    public Pet(String name, String type, int age, double weight) {
        this.name = name;
        this.type = type;
        this.age = age;
        this.weight = weight;
    }

    public String getName() {
        return name;
    }

    public String getType() {
        return type;
    }

    public int getAge() {
        return age;
    }

    public double getWeight() {
        return weight;
    }

    @Override
    public String toString() {
        return "名称：" + name + "，种类：" + type + "，年龄：" + age + "岁，体重：" + weight + "kg";
    }
}

在这个例子中，用户可以在添加宠物的面板中输入宠物的名称、种类、年龄和体重，并点击“添加”按钮将宠物添加到宠物列表中。宠物列表使用JTextArea组件实现，并使用JScrollPane组件添加滚动条。当用户点击“添加”按钮后，程序会创建一个Pet对象并将它添加到宠物列表中，并清空用户输入的宠物信息。