我做错了什么?我正在尝试向jpanel1添加一个复选框组。但是我真的不明白为什么不起作用?
ps。 GUI由NetBeans matisse制作,然后我在新类中手动编辑代码。
谢谢
CheckboxGroup cbGroup = new CheckboxGroup();
Checkbox importBox = new Checkbox("aaa", cbGroup, true);
Checkbox specialBox = new Checkbox("bbb", cbGroup, false);
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jPanel1 = new javax.swing.JPanel();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(new FlowLayout());
jPanel1.add(importBox);
jPanel1.add(specialBox);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 210, Short.MAX_VALUE)
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 100, Short.MAX_VALUE)
);
最佳答案
您将JCheckBox添加到容器中;也许像这样
public static void main(String args[]) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
JFrame frame = new JFrame();
ButtonGroup bg = new ButtonGroup();
JCheckBox importBox = new JCheckBox("aaa", true);
JCheckBox specialBox = new JCheckBox("bbb", false);
bg.add(importBox);
bg.add(specialBox);
JPanel panel = new JPanel();
panel.add(importBox);
panel.add(specialBox);
frame.add(panel);
frame.pack();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
});
}
看起来像这样
关于java - 复选框组未显示在面板上,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/21054330/