create a property file in java

       

            Properties prop = new Properties();
                   
            prop.setProperty("connectionurl", connectionurl);
            prop.setProperty("username", userName);
       
            prop.setProperty("password", passWord);
            prop.setProperty("driverClassName", driverClassName);
         
            //save properties to project root folder
            File file = new File(System.getProperty("user.dir") + File.separator +  "config.properties");
            prop.store(new FileOutputStream(file, false), null);

   This is used to create a property file with the above parameters
   connectionurl,username,password,driverClassName,.