You need to change your configPath to :
String configPath ="C:\\Selenium_Automation_JSP\\automation\\src\\com\\selenium\\config\\config.properties";
and then load it like:
CONFIG.load(new FileInputStream(configPath));
EDIT : As per @sircapsalot , absolute paths is a bad idea. If you think your configPath will change, you can use it to change it to an absolute path using regex or something like that and then pass it to the FileInputStream
. I should make it clear that FileInputStream does need absolute paths for working.