Parameters in try block..pls help

Question

I have the following code which I do not understand the reason it is not work. i.e. Putting the driver, dbURL, login, password value in the beginning work, however, setting it in the try blocks does not. Can you please help me? Thank you.
public ConnectionManager()
// (This block works OK if uncommented)
//driver = "com.mysql.jdbc.Driver";
//dbURL = "jdbc:mysql://localhost/BOOKINGSYSTEM";
//login = "root";
//password = "password";
try {
Properties Prop = new Properties();
InputStream configStream = ConnectionManager.class.getClass().getResourceAsStream("/config/database.properties");
Prop.load(configStream);
configStream.close();
//driver =Prop.getProperty("driver");
//dbURL = Prop.getProperty("dbURL");
//login = Prop.getProperty("login");
//password = Prop.getProperty("password");
// (This block DOES NOT works...why??)
driver = "com.mysql.jdbc.Driver";
dbURL = "jdbc:mysql://localhost/BOOKINGSYSTEM";
login = "root";
password = "password";
} catch(IOException e) {
System.out.println("Error: Cannot laod configuration file ");
}

Answer 1

I have the following code which I do not understand
the reason it is not work. i.e. Putting the driver,
dbURL, login, password value in the beginning work,
however, setting it in the try blocks does not. Can
you please help me? Thank you.What exactly do you mean by "it does not work"?