Rajasekaran Venkadasalam

1)What is Entity Bean and Session Bean ?
2)What are the methods of Entity Bean?
3)How does Stateful Session bean store its state ?
4)it will store the conversional sta
5)Why does Stateless Session bean not store its state even though it has ejbActivate and ejbPassivate ?
6)What are the services provided by the container ?
7)Types of transaction ?
8)What is bean managed transaction ?
9)Why does EJB needs two interface( Home and Remote Interface) ?
10)What are transaction attributes ?
11)What is the difference between Container managed persistent bean and Bean managed persistent entity bean ?
12)What is J2EE ?
13)What is JTS ?
14)How many entity beans used and how many tables can u use in EJB project ?
15)What is scalable,portability in J2EE?
16)What is Connection pooling?Is it advantageous?
17)Method and class used for Connection pooling ?
18)How to deploy in J2EE(i.e Jar,War file) ?
19)How is entity bean created using Container managed entity bean ?
20)Sotware architechture of EJB ?
21)In Entity bean will the create method in EJB home and ejbCreate in Entity bean have the same parameters ?
22)What methods do u use in Servlet � Applet communication ?
23)What are the types of Servlet ?
24)Difference between HttpServlet and Generic Servlets ?
25)Difference between doGet and doPost ?
26)What are the methods in HttpServlet?
27)What are the types of SessionTracking?
28)What is Cookie ? Why is Cookie used ?
29)If my browser does not support Cookie,and my server sends a cookie instance What will happen ?
30)Why do u use Session Tracking in HttpServlet ?
31)Can u use javaScript in Servlets ?
32)What is the capacity the doGet can send to the server ?
33)What are the type of protocols used in HttpServlet ?
34)Difference between TCP/IP and IP protocol ?
35)Why do you use UniCastRemoteObject in RMI ?
36)How many interfaces are used in RMI?
37)Can Rmi registry be written in the code, without having to write it in the command prompt and if yes where?
38)Why is Socket used ?
39)What are the types of JDBC drivers ?
40)Explain the third driver(Native protocol driver) ?
41)Which among the four driver is pure Java driver ?
42)What are the Isolation level in JDBC transaction ?
43)How do you connect with the database ?
44)How do you connect without the Class.forName (" ") ?
45)What does Class.forName return ?
46)What are the types of statement ?
47)Why is preparedStatement,CallableStatement used for?
48)In real time project which driver did u use ?
49)Difference between AWT and Swing compenents ?
50)Is there any heavy weight component in Swings ?
51)Can the Swing application if you upload in net, be compatible with your browser?
52)What should you do get your browser compatible with swing components?
53)What are the methods in Applet ?
54)When is init(),start() called ?
55)When you navigate from one applet to another what are the methods called ?
56)What is the difference between Trusted and Untrusted Applet ?
57)What is Exception ?
58)What are the ways you can handle exception ?
59)When is try,catch block used ?
60)What is finally method in Exceptions ?
61)What are the types of access modifiers ?
62)What is protected and friendly ?
63)What are the other modifiers ?
64)Is synchronised modifier ?
65)What is meant by polymorphism ?
66)What is inheritance ?
67)What is method Overloading ? What is this in OOPS ?
68)What is method Overriding ? What is it in OOPS ?
69)Does java support multi dimensional arrays ?
70)Is multiple inheritance used in Java ?
71)How do you send a message to the browser in JavaScript ?
72)Does javascript support multidimensional arrays ?
73)Why is XML used mainly?
74)Do use coding for database connectivity in XML?
75)What is DTD ?
76)Is there any tool in java that can create reports ?

Answer this Questions..Useful for All..

1)What is meant by Java ?
2)What is meant by a class ?
3)What is meant by a method ?
4)What are the OOPS concepts in Java ?
5)What is meant by encapsulation ? Explain with an example
6)What is meant by inheritance ? Explain with an example
7)What is meant by polymorphism ? Explain with an example
8)Is multiple inheritance allowed in Java ? Why ?
9)What is meant by Java interpreter ?
10)What is meant by JVM ?
11)What is a compilation unit ?
12)What is meant by identifiers ?
13)What are the different types of modifiers ?
14)What are the access modifiers in Java ?
15)What are the primitive data types in Java ?
16)What is meant by a wrapper class ?
17)What is meant by static variable and static method ?
18)What is meant by Garbage collection ?
19)What is meant by abstract class
20)What is meant by final class, methods and variables ?
21)What is meant by interface ?
22)What is meant by a resource leak ?
23)What is the difference between interface and abstract class ?
24)What is the difference between public private, protected and static
25)What is meant by method overloading ?
26)What is meant by method overriding ?
27)What is singleton class ?
28)What is the difference between an array and a vector ?
29)What is meant by constructor ?
30)What is meant by casting ?
31)What is the difference between final, finally and finalize ?
32)What is meant by packages ?
33)What are all the packages ?
34)Name 2 calsses you have used ?
35)Name 2 classes that can store arbitrary number of objects ?
36)What is the difference between java.applet.* and java.applet.Applet ?
37)What is a default package ?
38)What is meant by a super class and how can you call a super class ?
39)What is anonymous class ?
40)Name interfaces without a method ?
41)What is the use of an interface ?
42)What is a serializable interface ?
43)How to prevent field from serialization ?
44)What is meant by exception ?
45)How can you avoid the runtime exception ?
46)What is the difference between throw and throws ?
47)What is the use of finally ?
48)Can multiple catch statements be used in exceptions ?
49)Is it possible to write a try within a try statement ?
50)What is the method to find if the object exited or not ?
51)What is meant by a Thread ?
52)What is meant by multi-threading ?
53)What is the 2 way of creating a thread ? Which is the best way and why ?
54)What is the method to find if a thread is active or not ?
55)What are the thread-to-thread communcation ?
56)What is the difference between sleep and suspend ?
57)Can thread become a member of another thread ?
58)What is meant by deadlock ?
59)How can you avoid a deadlock ?
60)What are the three typs of priority ?
61)What is the use of synchronizations ?
62)Garbage collector thread belongs to which priority ?
63)What is meant by time-slicing ?
64)What is the use of �this� ?
65)How can you find the length and capacity of a string buffer ?
66)How to compare two strings ?
67)What are the interfaces defined by Java.lang ?
68)What is the purpose of run-time class and system class
69)What is meant by Stream and Types ?
70)What is the method used to clear the buffer ?
71)What is meant by Stream Tokenizer ?
72)What is serialization and de-serialisation ?
73)What is meant by Applet ?
74)How to find the host from which the Applet has originated ?
75)What is the life cycle of an Applet ?
76)How do you load an HTML page from an Applet ?
77)What is meant by Applet Stub Interface ?
78)What is meant by getCodeBase and getDocumentBase method ?
79)How can you call an applet from a HTML file
80)What is meant by Applet Flickering ?
81)What is the use of parameter tag ?
82)What is audio clip Interface and what are all the methods in it ?
83)What is the difference between getAppletInfo and getParameterInfo ?
84)How to communicate between applet and an applet ?
85)What is meant by event handling ?
86)What are all the listeners in java and explain ?
87)What is meant by an adapter class ?
88)What are the types of mouse event listeners ?
89)What are the types of methods in mouse listeners ?
90)What is the difference between panel and frame ?
91)What is the default layout of the panel and frame ?
92)What is meant by controls and types ?
93)What is the difference between a scroll bar and a scroll panel.
94)What is the difference between list and choice ?
95)How to place a component on Windows ?
96)What are the different types of Layouts ?
97)What is meant by CardLayout ?
98)What is the difference between GridLayout and GridBagLayout
99)What is the difference between menuitem and checkboxmenu item.
100)What is meant by vector class, dictionary class , hash table class,and property class ?
101)Which class has no duplicate elements ?
102)What is resource bundle ?
103)What is an enumeration class ?
104)What is meant by Swing ?
105)What is the difference between AWT and Swing ?
106)What is the difference between an applet and a Japplet
107)What are all the components used in Swing ?
108)What is meant by tab pans ?
109)What is the use of JTree ?
110)How can you add and remove nodes in Jtree.
111)What is the method to expand and collapse nodes in a Jtree ?
112)What is the use of JTable ?
113)What is meant by JFC ?
114)What is the class in Swing to change the appearance of the Frame in Runtime.
115)How to reduce flicking in animation ?
116)What is JDBC ?
117)How do you connect to the database ? What are the steps ?
118)What are the drivers available in JDBC ? Explain
119)How can you load the driver ?
120)What are the different types of statement s ?
121)How can you created JDBC statements ?
122)How will you perform transactions using JDBC ?
123)What are the two drivers for web apllication?
124)What are the different types of 2 tier and 3 tier architecture ?
125)How can you retrieve warning in JDBC ?
126)What is the exception thrown by JDBC ?
127)What is meants by PreparedStatement ?
128)What is difference between PreparedStatement and Statement ?
129)How can you call the stored procedures ?
130)What is meant by a ResultSet ?
131)What is the difference between ExecuteUpdate and ExecuteQuery ?
132)How do you know which driver is connected to a database ?
133)What is DSN and System DSN and differentiate these two ?
134)What is meant by TCP, IP, UDP ?
135)What is the difference between TCP and UDP ?
136)What is a proxy server ?
137)What is meant by URL
138)What is a socket and server sockets ?
139)When MalformedURLException and UnknownHost Exception throws ?
140)What is InetAddress ?
141)What is datagram and datagram packets and datagram sockets ?
142)Write the range of multicast socket IP address ?
143)What is meant by a servlet ?
144)What are the types of servlets ? Explain
145)What is the different between a Servlet and a CGI.
146)What is the difference between 2 types of Servlets ?
147)What is the type of method for sending request from HTTP server ?
148)What are the exceptions thrown by Servlets ? Why ?
149)What is the life cycle of a servlet ?
150)What is meant by cookies ?
151)What is HTTP Session ?
152)What is the difference between GET and POST methods ?
153)How can you run a Servlet Program ?
154)How to commuincate between an applet and a servlet ?
155)What is a Servlet-to-Servlet communcation ?
156)What is Session Tracking ?
157)What are the security issues in Servlets ?
158)What is HTTP Tunneling
159)How do you load an image in a Servlet ?
160)What is Servlet Chaining ?
161)What is URL Rewriting ?
162)What is context switching ?
163)What is meant by RMI ?
164)Explain RMI Architecture ?
165)What is meant by a stub ?
166)What is meant by a skelotn ?
167)What is meant by serialisation and deserialisation ?
168)What is meant by RRL ?
169)What is the use of TL ?
170)What is RMI Registry ?
171)What is rmic ?
172)How will you pass parameter in RMI ?
173)What exceptions are thrown by RMI ?
174)What are the steps involved in RMI ?
175)What is meant by bind(), rebind(), unbind() and lookup() methods
176)What are the advanatages of RMI ?
177)What is JNI ?
178)What is Remote Interface ?
179)What class is used to create Server side object ?
180)What class is used to bind the server object with RMI Registry ?
181)What is the use of getWriter method ?
182)What is meant by Javabeans ?
183)What is JAR file ?
184)What is meant by manifest files ?
185)What is Introspection ?
186)What are the steps involved to create a bean ?
187)Say any two properties in Beans ?
188)What is persistence ?
189)What is the use of beaninfo ?
190)What are the interfaces you used in Beans ?
191)What are the classes you used in Beans ?

Logging for J2EE Server Version: 1.3.1-b17 started at: Thu Aug 22 10:34:55 GMT+05:30 2002..
Using the Java HotSpot(TM) Client VM and the version number 1.3.0 from Sun Microsystems Inc..
VM is using the classpath: C:\j2sdkee1.3.1\lib\system\cloudscape.jar;C:\j2sdkee1.3.1\lib\system\tools.jar;C:\j2sdkee1.3.1\lib\cloudscape\RmiJdbc.jar;C:\j2sdkee1.3.1\lib\cloudscape\cloudclient.jar;C:\j2sdkee1.3.1\lib\classes;C:\j2sdkee1.3.1\classes;C:\j2sdkee1.3.1\lib\j2ee.jar;C:\j2sdkee1.3.1\lib\toolclasses;C:\j2sdkee1.3.1\lib\j2eetools.jar;C:\j2sdkee1.3.1\lib\locale;;D:\jdk1.3\lib\tools.jar;C:\j2sdkee1.3.1\lib\jhall.jar .
J2EE Home Directory has been set to: C:\j2sdkee1.3.1.

java.lang.NoSuchMethodError
at com.sun.corba.ee.internal.corba.AnyImpl.createTypeCodeForClass(AnyImpl.java:1256)
at com.sun.corba.ee.internal.iiop.ShutdownUtilDelegate.createTypeCode(ShutdownUtilDelegate.java:223)
at com.sun.corba.ee.internal.iiop.ShutdownUtilDelegate.writeAny(ShutdownUtilDelegate.java:178)
at javax.rmi.CORBA.Util.writeAny(Util.java:80)
at org.omg.stub.com.sun.enterprise.naming._SerialContextProvider_Stub.rebind(Unknown Source)
at com.sun.enterprise.naming.SerialContext.rebind(SerialContext.java:188)
at com.sun.enterprise.naming.SerialContext.rebind(SerialContext.java:202)
at javax.naming.InitialContext.rebind(InitialContext.java:370)
at com.sun.enterprise.naming.NamingManagerImpl.publishObject(NamingManagerImpl.java:192)
at com.sun.enterprise.naming.NamingManagerImpl.publishObject(NamingManagerImpl.java:149)
at com.sun.enterprise.server.J2EEServer.bindObject(J2EEServer.java:718)
at com.sun.enterprise.server.J2EEServer.createServerObject(J2EEServer.java:473)
at com.sun.enterprise.server.J2EEServer.run(J2EEServer.java:244)
at com.sun.enterprise.server.J2EEServer.main(J2EEServer.java:972)

I AM GETTING THIS EXCEPTION WHILE STARTING THE J2EE SERVER.USING THIS COMMAND[j2ee -verbose]
ANY DETAILS POST ME ..

WAITING FOR REPLIES

URS VENKAT

hello do you know why javaw is used for...it is used to open the executable jar file.
please study the documentation..if you dont have doc please refer me..Okay
:-)

Hi,
you can make a jar file and giving the exact path of that jar file as a Classpath..this will better for a beginner's..way's to create a jar file is
jar -cvf test.jar [package's root directory ex: com\]
try it out

if possible to compile a java program in runtime of another java program.reply me your ideas...
with regrds
venkat

HI ALL
THIS TOPIC IS FULLL BASED TO ISSUE THE PROJECT BASED PROBLEMS,HELP AND DETAILS..AMOUNG OUR JRANCH 'GURU'....LETS START...

WITH REGRDS
B]VENKAT[/B]

HI Alll
i am facing problem of StreamCorruption exception while i am trying to read datas continueously.if anybody got any ideas.. PostIT
waiting 4Ur Rpy..??!!
venkat