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1,先看效果

 

上面是文本框,紧挨着下面是对应的下拉框,点击下拉框时,下拉框中的item的内容自动填充到上面的文本框中.

实现代码:

 

Java代码  

1. public static JComboBox<String> comboBoxSelectedHandle(JComboBox<String> comboBox,final JTextField ipTextField){  
2.         if(ValueWidget.isNullOrEmpty(comboBox)){  
3.             comboBox = new JComboBox<String>();  
4.         }  
5.         comboBox.addMouseListener(new MouseAdapter() {  
6.             @Override  
7.             public void mouseClicked(MouseEvent e) {  
8.                 JComboBox<String> target=(JComboBox<String>)e.getSource();  
9.                 String  selectedPort=(String)target.getSelectedItem();  
10.                 if(!ValueWidget.isNullOrEmpty(selectedPort)){  
11.                     ipTextField.setText(selectedPort);  
12.                 }  
13. //              System.out.println(e.getSource());  
14.             }  
15.         });  
16.         comboBox.addItemListener(new ItemListener() {  
17.             public void itemStateChanged(ItemEvent e) {  
18.                 JComboBox<String> target=(JComboBox<String>)e.getSource();  
19.                 String  selectedPort=(String)target.getSelectedItem();  
20.                 if(!ValueWidget.isNullOrEmpty(selectedPort)){  
21.                     ipTextField.setText(selectedPort);  
22.                 }  
23.             }  
24.         });  
25.         return comboBox;  
26.     }  

2,项目

采用Java swing编写,使用maven构建