http://www.allinterview.com Top Java J2EE Interview Questions en-us http://www.allinterview.com/showanswers/23154.html System: System refers to current java program. out: out refers to output device. by default it is monitor. println: to print the specific string onto output device in next line http://www.allinterview.com/showanswers/32553.html There are three types of oops in java. 1.Encapsulation:Encapsulation is mechanism,that binds together data and code its manipulates. Ex:suppose we are writing one bean.we declaring two private variables.we are providing setters and getters method http://www.allinterview.com/showanswers/10954.html Response.sendRedirect () This function is used, when we want to redirect the client request to some other site (i.e out of our context) or when ever we want to redirect errors. If you are using sendRedirect (), then it will be visible to the http://www.allinterview.com/showanswers/20110.html MVC1 it combines the presentation logic with the business logic where as MVC2 it seperates the presentation logic from business logic http://www.allinterview.com/showanswers/1065.html Access specifiers :: The access specifier determines how accessible the field is to code in other classes. Access ranges from totally accessible to totally inaccessible. You can optionally declare a field with an access specifier keyword: p http://www.allinterview.com/showanswers/20103.html 1)Forward Action 2)Include Action 3)Dispatch Action 4)Switch Action.........(one more Action is there) http://www.allinterview.com/showanswers/20108.html Model Components Model components provide a "model" of the business logic or data behind a Struts program. For example, in a Struts application that manages customer information, it may be appropriate to have a "Customer" M http://www.allinterview.com/showanswers/20105.html Struts is not only thread safe, it is thread dependant. Struts instansiate each Action only once and allow all other request to be handled by the same action http://www.allinterview.com/showanswers/11031.html 1)We define an Interface in the Java application with a set of abstract methods without any implementation. Which means all the methods of an interface are by default abstract methods and public methods. 2)Once an Interface is defined in the http://www.allinterview.com/showanswers/23767.html See the diffrence is that core java is the fundamental for java that will be used in any java technology without this no one can jump on any advance java technology. Where as advance java is specialisation in some domain , as someone in networki http://www.allinterview.com/showanswers/15727.html The IncludeAction has the same problem that the ForwardAction used to have . The IncludeAction directly calls the request dispatcher, returns a null ActionForward which bypasses the processing of the RequestProcessor. Unfortunate http://www.allinterview.com/showanswers/28188.html sendRedirect() means it's client side redirect at that time new parameters can be added.(i.e HttpRequest, HttpResponse) forward() meand it's server side redirect at that time same parameters can be used. forward() can be used fo http://www.allinterview.com/showanswers/3655.html Both these Frameworks are used for forcing the implementation of MVC-2 pattern. Struts Framework is implemented by apache, where as JSF is implemented by Sun Microsystems. http://www.allinterview.com/showanswers/20264.html 1. Arraylist is not synchronized while vector is. 2. Arraylist has no default size while vector has a default size of 10. http://www.allinterview.com/showanswers/36891.html no,not a thread safe