Vant 下拉框实现年月日选择 - 代码示例
import\u0020java.awt.BorderLayout;import\u0020java.awt.EventQueue;import\u0020java.awt.FlowLayout;import\u0020javax.swing.JComboBox;import\u0020javax.swing.JFrame;import\u0020javax.swing.JLabel;import\u0020javax.swing.JPanel;public\u0020class\u0020DropdownExample\u0020extends\u0020JFrame\u0020{private\u0020JPanel\u0020contentPane;public\u0020static\u0020void\u0020main(String[]\u0020args)\u0020{EventQueue.invokeLater(()\u0020->\u0020{try\u0020{DropdownExample\u0020frame\u0020=\u0020new\u0020DropdownExample();frame.setVisible(true);}catch\u0020(Exception\u0020e)\u0020{e.printStackTrace();}});}public\u0020DropdownExample()\u0020{setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);setBounds(100,\u0020100,\u0020300,\u0020150);contentPane\u0020=\u0020new\u0020JPanel();contentPane.setLayout(new\u0020BorderLayout(0,\u00200));setContentPane(contentPane);JPanel\u0020panel\u0020=\u0020new\u0020JPanel();contentPane.add(panel,\u0020BorderLayout.CENTER);panel.setLayout(new\u0020FlowLayout(FlowLayout.CENTER,\u00205,\u00205));JComboBox
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