ADF code for retrieving currently logged in user

We can retrieve the currently logged user in two ways.

1. By el : retrieving the user details in front end pages using expression language.

#{securityContext.userName}

2. By managed bean java code.

import statements :
              import oracle.adf.share.ADFContext;
              import oracle.adf.share.security.SecurityContext;

SecurityContext securityContext=ADFContext.getCurrent().getSecurityContext();
String username=securityContext.getUserName();