swing效果点击下拉框自动填充文本框

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:

 

public static JComboBox<String> comboBoxSelectedHandle(JComboBox<String> comboBox,final JTextField ipTextField){
		if(ValueWidget.isNullOrEmpty(comboBox)){
			comboBox = new JComboBox<String>();
		}
		comboBox.addMouseListener(new MouseAdapter() {
			@Override
			public void mouseClicked(MouseEvent e) {
				JComboBox<String> target=(JComboBox<String>)e.getSource();
				String  selectedPort=(String)target.getSelectedItem();
                if(!ValueWidget.isNullOrEmpty(selectedPort)){
                	ipTextField.setText(selectedPort);
                }
//				System.out.println(e.getSource());
			}
		});
		comboBox.addItemListener(new ItemListener() {
			public void itemStateChanged(ItemEvent e) {
				JComboBox<String> target=(JComboBox<String>)e.getSource();
				String  selectedPort=(String)target.getSelectedItem();
                if(!ValueWidget.isNullOrEmpty(selectedPort)){
                	ipTextField.setText(selectedPort);
                }
			}
		});
		return comboBox;
	}

 

2,项目

采用Java swing编写,使用maven构建

源代码见附件

 

------------ 2017-05-27 10:27:11 优化--------------- 

public static JComboBox<String> comboBoxSelectedHandle(JComboBox<String> comboBox,final JTextField ipTextField){
		if(ValueWidget.isNullOrEmpty(comboBox)){
            System.out.println("JComboBox is null");
            comboBox = new JComboBox<String>();
        }
		comboBox.addMouseListener(new MouseAdapter() {
			@Override
			public void mouseClicked(MouseEvent e) {
                setSelectedItem(e, ipTextField);
//				System.out.println(e.getSource());
			}
		});
		comboBox.addItemListener(new ItemListener() {
			public void itemStateChanged(ItemEvent e) {
                setSelectedItem(e, ipTextField);
            }
        });
        comboBox.addActionListener(new ActionListener() {
            /***
             * 单击弹出的下拉列表时触发
             * @param e
             */
            @Override
            public void actionPerformed(ActionEvent e) {
                setSelectedItem(e, ipTextField);
            }
        });
        return comboBox;
    }

    public static void setSelectedItem(AWTEvent e, JTextField ipTextField) {
        JComboBox<String> target = (JComboBox<String>) e.getSource();
        String selectedPort = (String) target.getSelectedItem();
        if (!ValueWidget.isNullOrEmpty(selectedPort)) {
            ipTextField.setText(selectedPort);
        }
    }