Difference between ServletConfig and ServletContext in JAVA

ServletConfig:

• ServletConfig available in javax.servlet.*; package
• ServletConfig object is one per servlet class
• Object of ServletConfig will be created during initialization process of the servlet
• This Config object is public to a particular servlet only
• Scope: As long as a servlet is executing, ServletConfig object will be available, it will be destroyed once the servlet execution is completed.
• We should give request explicitly, in order to create ServletConfig object for the first time.

  

ServletContext:

• ServletContext available in javax.servlet.*; package
• ServletContext object is global to entire web application
• Object of ServletContext will be created at the time of web application deployment
• Scope: As long as web application is executing, ServletContext object will be available, and it will be destroyed once the application is removed from the server.
• ServletContext object will be available even before giving the first request