文本组合筐.txt

此文件为自己自学JAVA时调试通过的JAVA程序范例

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

class FrameTest extends JFrame
{
 public FrameTest()
 {
  super("窗口标题");
  setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  setVisible(true);
  setSize(240,90);
 }
}

class PanelTest extends FrameTest
{
 JPanel PanelObj;
 public PanelTest()
 {
  PanelObj=new JPanel();
  getContentPane().add(PanelObj);
 }
}

class JComboBoxTest extends PanelTest
{
 JComboBox ComboBoxObj;
 public JComboBoxTest()
 {
  String ComboBoxStr[]={"下拉筐1","下拉筐2","下拉筐3","下拉筐4","下拉筐5",
                        "下拉筐6","下拉筐7","下拉筐8","下拉筐9","下拉筐10",
                        "下拉筐11","下拉筐12"};
  ComboBoxObj=new JComboBox(ComboBoxStr);
  ComboBoxObj.setBackground(Color.white);
  PanelObj.add(ComboBoxObj);
 }
}
 
class Frame11
{
 public static void main(String[] args)
 {
  new JComboBoxTest();
 }
}