Java J2EE Interview Questions and Answers

101 How do you download stubs from a Remote place ?

104 What is the main functionality of the Prepared Statement ?
105 What is meant by static query and dynamic query ?

107 What is meant by Servlet? What are the parameters of the service method ?
108 What is meant by Session ? Tell me something about HTTPSession Class ? How do you invoke a Servelt? What is the difference in between doPost and doGet methods ?
109 What is the difference in between the HTTPServlet and Generic Servlet ? Expalin their methods ? Tell me their parameter names also ?
110 Have you used threads in Servelet ?
111 Write a program on RMI and JDBC using StoredProcedure ?

113 In a Container there are 5 components. I want to display all the components names, how will you do that one ?
114 Why there are some null interface in java ? What does it mean ? Give me some null interfaces in JAVA ?

116 What is meant by class loader ? How many types are there? When will we use them ?
117 How do you load an Image in a Servlet ?
118 What is meant by flickering ?
119 What is meant by distributed Application ? Why we are using that in our applications ?
120 What is the functionality of the stub ?

122 What is the latest version of JDBC ? What are the new features are added in that ?
123 Explain 2 tier and 3 -tier Architecture ?
124 What is the role of the webserver ?

127 What is meant by cookies ? Explain ?
132 Public static void main – Explain What are command line arguments
133 Difference between String & StringBuffer
134 Wrapper class. Is String a Wrapper Class
135 What are the restriction for static method
136 Purpose of the file class
137 Default modifier in Interface
138 Can abstract be declared as Final
139 Can we declare variables inside a method as Final Variables
140 What is the package concept and use of package
141 How can a dead thread be started
142 Difference between Applet & Application
143 Life cycle of the Applet
144 Can Applet have constructors
145 Differeence between canvas class & graphics class
146 Explain about Superclass & subclass
147 Difference between TCP & UDP

149 Explain Stream Tokenizer
150 What is the difference between two types of threads