1,设置面板不可拖动变化
java.awt.Frame.setResizable(false);
2,设置一组单选RadioButton
先声明: ButtonGroup jButtonGroup = new ButtonGroup(); JRadioButton jRadioButton1 = new JRadioButton(); JRadioButton jRadioButton2 = new JRadioButton(); JRadioButton jRadioButton3 = new JRadioButton(); 后捆绑: jButtonGroup.add(jRadioButton1); jButtonGroup.add(jRadioButton2); jButtonGroup.add(jRadioButton3);
3,弹出一个提示框
JOptionPane.showMessageDialog(this,””)
4,获取一个列表对象的总长度
getItemCount();
5,判断一个列表对象中一个Item是否被选中
isIndexSelected(int index); 
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