title: WebSecurityConfigurerAdapter and AbstractSecurityWebApplicationInitializer absent
body: <p>In most demos I have seen<br>
  1) WebSecurityConfigurerAdapter (For configuration)</p>
  
  <p>2)AbstractSecurityWebApplicationInitializer (For initialising the SECURITY FILTERS )</p>
  
  <p>In my project at  work we are also  using SPRING SECURITY,but i couldn't any of the above mentioned classes.</p>
  
  <p>So how in my project we are initializing Spring Security filters and configuring it?</p>
  
  <p>In my project we are implementing/extending the following interfaces/classes</p>
  
  <p>My application uses SPRING BOOT</p>
  
  <p>a) AuthenticationProvider</p>
  
  <p>b) Authentication</p>
  
  <p>c) Filter</p>