我有一個JButton更新我的MYSQL數據庫中的數據,我如何僅在JTextFields中檢測到更改時啓用JButton?JAVA:只有當在JTextField中進行更改時才啓用JButton
...這是我的更新按鈕
private void updateBtnActionPerformed(java.awt.event.ActionEvent evt) {
try{
String a = IDField.getText();
String query = "UPDATE employee SET First_Name=?, Last_Name=?,Job_Title=? WHERE ID=?";
PreparedStatement ps = conn.prepareStatement(query);
ps.setString(1, FNameField.getText());
ps.setString(2, LNameField.getText());
ps.setString(3, jobTitleField.getText());
ps.setString(4, a);
ps.executeUpdate();
JOptionPane.showMessageDialog(null, "Successfully Updated Employee Record!");
}catch(Exception e){
System.out.println(e);
}