How to catch a "java.net.ConnectException: Connection refused: connect" exception

To check what happens when the server is down or the network is not working I stopped Apache and MySQL services and ran my code.

I got following error:

java.net.ConnectException: Connection refused: connect

how can I catch this exception in code?

I've tried this:

public static Connection getCon(){
  Connection con=null;


  try{
    Class.forName("com.mysql.jdbc.Driver").newInstance();
    con=DriverManager.getConnection(
        "jdbc:mysql://localhost:3306/zomatocrm","root","");
  }

  catch(Exception e){
    System.out.println(e.getMessage());
    if(e.getCause() instanceof SQLException){
      JOptionPane.showMessageDialog(null, "Connection refused!");
    }                   
  }
  return con;
}

And also this

 public static Connection getCon(){
   Connection con=null;

   try{
     Class.forName("com.mysql.jdbc.Driver").newInstance();
     con=DriverManager.getConnection(
         "jdbc:mysql://localhost:3306/zo开发者_StackOverflow中文版matocrm","root","");
   }

   catch(Exception e){
     System.out.println(e.getMessage());
     if(e.getCause() instanceof ConnectException){
       JOptionPane.showMessageDialog(null, "Connection refused!");
     }                   
   }
   return con;
 }

Also I've used the connection to do data exchange with my xampp localhost sever and then tried with stopping xamp and still getting the above exception.

How do I have my code catch the exception completely?

---

1. Don't check the cause, but the exception itself
2. Catch only the kind of exception you need to catch

With that in mind:

public static Connection getCon() {
    Connection con=null;
    try {
        Class.forName("com.mysql.jdbc.Driver").newInstance();
        con=DriverManager.getConnection("jdbc:mysql://localhost:3306/zomatocrm", "root", "");
    }
    catch (ConnectException e){
       System.out.println(e.getMessage());
       JOptionPane.showMessageDialog(null, "Connection refused!!!");
    }
    return con;
}