tariqabbas

Before going into any detail about JSF lets remember few important points : JSF component based MVC framework

Aspect Oriented Programming: Prior to study of AOP you must understand few terminologies in terms of programming . Aspect concern core concern cross cutting concern   Description: Aspect: Concern: Core Concern: Cross Cutting Concern: Now what is AOP? It is specialized programming methodology using which " cross cutting concern"  is dynamically decoupled from " core concern"   The key unit of modularity in AOP is the  aspect . Aspects enable the modularization of concerns such as transaction management that cut across multiple types and objects.  AOP is not replacement for OOP core concern is modularized using OOP whereas crosscutting concern is modularized using AOP .

How To Generate  Development And Release Key Hashes: (for windows ) 1- open you cmd and type this command : keytool - exportcert - alias androiddebugkey - keystore % HOMEPATH % \.android\debug . keystore | openssl sha1 - binary | openssl base64 Note:- make sure that your your environment variable is set for JAVA,other wise locate keytool.exe in your java folder and type the above command. In the above command locate the openssl.exe and write the full path ,only writing openssl may not work.   openssl.exe exists inside "C:\OpenSSL-Win64\bin" if command is typed correctly then it will ask for keystore password. Default password for   debug . keystore is " android " after successfully completing this process it will generate key value in the cmd. copy that and use it where it is required. remember it is  Development Key Hash