怎样用java编写图形界面的Application程序

java编写图形界面需要用到swing等组件，可以在eclipse中安装windowbuilder来开发窗体，自动生成窗体代码，然后自己再根据需要修改，如：

package mainFrame;

import javaawtEventQueue;

import javaawteventMouseAdapter;

import javaawteventMouseEvent;

import javaxswingImageIcon;

import javaxswingJButton;

import javaxswingJCheckBox;

import javaxswingJFrame;

import javaxswingJLabel;

import javaxswingJPanel;

import javaxswingJPasswordField;

import javaxswingJTextField;

import javaxswingSwingConstants;

import javaxswingUIManager;

import javaxswingUnsupportedLookAndFeelException;

import javaxswingborderEmptyBorder;

public class Mian_login extends JFrame {

private JPanel contentPane;

private JTextField text_LoginName;

private JPasswordField Login_password;

/

Launch the application

/

public static void main(String[] args) {

EventQueueinvokeLater(new Runnable() {

@Override

public void run() {

try {

Mian_login frame = new Mian_login();

framesetVisible(true);

} catch (Exception e) {

eprintStackTrace();

}

}

});

}

/

Create the frame

/

public Mian_login() {

setDefaultCloseOperation(JFrameEXIT_ON_CLOSE);

setBounds(500, 200, 443, 300);

setResizable(false);

setTitle("登 录");

/获取系统按钮样式/

String lookAndFeel = UIManagergetSystemLookAndFeelClassName();

try {

UIManagersetLookAndFeel(lookAndFeel);

} catch (ClassNotFoundException e1) {

e1printStackTrace();

} catch (InstantiationException e1) {

e1printStackTrace();

} catch (IllegalAccessException e1) {

e1printStackTrace();

} catch (UnsupportedLookAndFeelException e1) {

e1printStackTrace();

}

contentPane = new JPanel();

contentPanesetBorder(new EmptyBorder(5, 5, 5, 5));

setContentPane(contentPane);

contentPanesetLayout(null);

JPanel panel = new JPanel();

panelsetOpaque(false);

panelsetBounds(0, 0, 434, 272);

contentPaneadd(panel);

panelsetLayout(null);

JButton btn_Login = new JButton("\u767B\u5F55");

btn_LoginaddMouseListener(new MouseAdapter() {

@Override

public void mouseClicked(MouseEvent e) {

}

});

btn_LoginsetBounds(88, 195, 70, 23);

paneladd(btn_Login);

JButton btn_cancel = new JButton("\u53D6\u6D88");

btn_canceladdMouseListener(new MouseAdapter() {

@Override

public void mouseClicked(MouseEvent e) {

dispose();

}

});

btn_cancelsetBounds(268, 195, 70, 23);

paneladd(btn_cancel);

JLabel lblNewLabel_name = new JLabel("\u7528\u6237\u540D");

lblNewLabel_namesetHorizontalAlignment(SwingConstantsCENTER);

lblNewLabel_namesetOpaque(true);

lblNewLabel_namesetBounds(88, 48, 70, 23);

paneladd(lblNewLabel_name);

JLabel lblNewLabel_passwd = new JLabel("\u5BC6\u7801");

lblNewLabel_passwdsetHorizontalAlignment(SwingConstantsCENTER);

lblNewLabel_passwdsetOpaque(true);

lblNewLabel_passwdsetBounds(88, 102, 70, 23);

paneladd(lblNewLabel_passwd);

JCheckBox chckbx_remember = new JCheckBox("\u8BB0\u4F4F\u5BC6\u7801");

chckbx_remembersetBounds(102, 150, 84, 23);

paneladd(chckbx_remember);

text_LoginName = new JTextField();

text_LoginNamesetBounds(182, 48, 156, 23);

paneladd(text_LoginName);

text_LoginNamesetColumns(10);

Login_password = new JPasswordField();

Login_passwordsetBounds(182, 102, 156, 23);

paneladd(Login_password);

JCheckBox chckbx_AutoLogin = new JCheckBox("\u81EA\u52A8\u767B\u5F55");

chckbx_AutoLoginsetBounds(233, 150, 84, 23);

paneladd(chckbx_AutoLogin);

JLabel Label_background = new JLabel("");

Label_backgroundsetIcon(new ImageIcon("E:\\JAVA_workplace\\0002-\u754C\u9762\u8BBE\u8BA1\\images\\background3jpg"));

Label_backgroundsetBounds(0, 0, 437, 272);

contentPaneadd(Label_background);

}

}

如果您正在使用 Python 中的 `ipywidgets` 库，可以通过在 `interact` 函数中设置 `manual=True` 来初始化 `interact` 函数并在用户单击按钮时显示d出框。以下是一个示例代码：
```python
import ipywidgets as widgets
def calculate_result(x, y):
# 执行计算
result = x + y
return result
# 创建一个文本框和一个按钮
text_box_x = widgetsFloatText(description='X:')
text_box_y = widgetsFloatText(description='Y:')
button = widgetsButton(description='计算')
# 创建一个输出框
output = widgetsOutput()
# 定义点击按钮时要执行的函数
def on_button_click(button):
with output:
result = calculate_result(text_box_xvalue, text_box_yvalue)
print(f"结果为：{result}")
# 在按钮上注册点击事件
buttonon_click(on_button_click)
# 创建一个d出框，包含文本框、按钮和输出框
box = widgetsVBox([text_box_x, text_box_y, button, output])
# 在d出框上调用 interact 函数
widgetsinteract(lambda x: box, x=True, manual=True)
```
在上面的示例中，`interact` 函数的第一个参数是一个函数，它返回一个d出框。`manual=True` 表示要手动触发d出框的显示。在d出框中，我们创建了两个文本框和一个按钮，以便用户输入要计算的值，然后单击按钮来执行计算。计算结果将打印到d出框的输出框中。

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