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1. What is mean by dirty read
2. What is JIT
3. Can we Connect Applet to Data Base
4. Basic difference b/w ALL types of JDBC driver
5. What is the difference between Applet & Servlet
6. How to run eclipse with jettyserver using batch file
7. Why abstract class should have a constructor
8. How to write a program for chat function using core java
9. What is Inheritance, Polymorphism, Encapsulation
10. What is difference between hashmap and hashtable
11. What do you mean by JVM
12. What do you mean by wrapper Class
13. Can you create interface instance
14. What is dynamic method dispatch
15. Why we use applets
16. Which is not Object in Java
17. What is bit
18. How many bits are there in the byte
19. How to write a program for sending mails between client and server
20. What is the Arraylist limit by default
21. How do you change JVM for other OS? should need to Change
22. Can abstract class have constructor how can it
23. Which one the better thread implemented thread or extended
24. Can we write a program with out a class in core java
25. What is thread
26. What is casting
27. What is Interface
28. How the threads are synchronized
29. What is OOP
30. Do you know thread pools
31. What is hash method
32. What is data abstraction? Elaborate with example
33. What is the difference between arraylist and linkedlist
34. Write the code for Palindrome
35. What is Restrictions in hibernate
36. Can we override static methods
37. What are generics in jdk1.5
38. Difference between flush() and commit() in hibernate
39. What is the advantage of using threads
40. What is garbage collection in Java, and how it is used
41. Differentiate constructor and a method and how can be used
42. What is an abstract class
43. How can final class be used
44. Java support what type of parameter passing
45. Explain the term serialization
46. By what default value is an object reference declared as an instance variable
47. What is Overriding and how can it be used
48. In which way does a Primitive data type is passed
49. What is UNICODE
50. What are Transient and Volatile Modifiers
51. What is the use of bin and lib in JDK
52. WHAT IS finalize() method
53. Is there any need to import java.lang package
54. What happens when a main method is declared as private
55. there is any error if you have multiple main methods in the same class
56. Difference between this(), super()
57. Difference between an argument and a parameter
58. What are different types of access modifiers
59. What are Encapsulation, Polymorphism and Inheritance
60. Difference between Superclass and Subclass
61. Explain different ways of passing arguments to sub-routine
62. What are inner and anonymous class
63. b,b1,b2 are byte types
64. How can we find size of the object
65. What is the Diff. between Access Specifiers and Access Modifiers
66. How many classes that package java.applet.* contains
67. How to print nodes of a Binary tree
68. How to reduce flicking in animation
69. What is I/O Filter
70. How to initialize an Applet
71. What is 3-tier model
72. Can a class inherit the constructors of its superclass
73. Difference between Application and Applet
74. For which statements we use a label
75. How to eliminate duplicates from an array
76. Name the methods in mouse listeners
77. Explain Global variables in Packages
78. Explain about GridBag Layout
79. How OOPS concept is achieved in Java
80. Can an exception be rethrown
81. Can Applet have constructors
82. Does 'true' and 'false' are keywords
83. What Method and class used for Connection pooling
84. Can you call a private data from an inner class
85. Can multiple catch statements be used in exceptions
86. What are integer overflows and underflows and how to handle them
87. How are Java source code files named
88. How are Observer and Observable used
89. Can try statements be nested
90. Explain about global variables in Java
91. Name the class that used to read objects directly from a stream
92. Can we access a database using applets
93. Can you have a constructor in abstract class
94. Can you extend more than one interface
95. Define Compiling
96. Can a lock be acquired on a class
97. Difference between Applet & Application
98. Can an abstract class be final
99. How can we add two bytes variables
100. How can you debug the Java code
101. How to convert a string to long
102. Explain about casting of objects
103. How to add and remove nodes in Jtree
104. How to avoid the runtime exception
105. What is deadlock and how to avoid this
106. How are this and super used
107. What is lazy activation
108. Explain Stream Tokenizer
109. Explain Event handling in AWT
110. What are ER diagrams
111. What is the default modifier in Interface
112. What are Checked & Unchecked exceptions
113. Does java support multi dimensional arrays
114. Difference between canvas class & graphics class
115. Explain about Superclass and Subclass
116. Can you declare a static variable in a method
117. How the elements are organized in CardLayout
118. How the elements are organized in GridLayout
119. How to connect to a remote database using Applet
120. What are parent methods and how can you call them
121. How the elements are organized in BorderLayout
122. Can applet in different pages communicate with each other
123. Difference between Interface & Abstract class
124. How GUI component handle its own events
125. How are this() and super() used with constructors
126. Can you call a constructor within a constructor
127. What will happens if you opened Internet Explorer 4 times
128. How the elements are organized in GridBagLayout
129. Have you used any version control ? if so explain about it
130. Can you run the product development on all operating systems
131. Can an unreachable object become reachable again
132. How you can create a radio button using Checkbox class
133. Can you have an inner class inside a method and what variables can you access
134. class be declared as implementing an interface and extending a class
135. As a developer what steps do you take to improve the performance
136. How are commas used in the initialization and iteration parts of a for statement
137. Does garbage collection guarantee that a program will not run out of memory
138. Without creating a new object, How you can retrieve a String or other object
139. Can we declare variables inside a method as Final Variables
140. How many address lines are required to addressing 1 MB memory
141. How can you eliminate duplicates
142. How to find the length and capacity of a string buffer
143. How to implement a multithreaded applet
144. Can an object be garbage collected while it is still reachable
145. Can an object?s finalize() method be invoked while it is reachable
146. How to print nodes of a Binary tree
147. How to transfer data from an Applet to Servlet
148. How can you reverse a string
149. How can you take string into InputStream
150. How applets will communicate with each other
151. How to add panel to a Frame
152. How to prevent a field from serialization
153. What method is used to compare two strings
154. How to know the host from which Applet is originated
155. How can a class be accessed, If no access modifiers are declared
156. How to access a method that it declared as protected
157. How to access a variable if it is declared as private
158. How to re-get an object that is collected by garbage collector
159. How to display names of all components in a Container
160. What are Inner classes
161. Is 'null' a keyword
162. Is 'sizeof' a keyword
163. Is &&= a valid Java operator
164. Can a double value be cast to a byte
165. Can a Byte object be cast to a double value
166. What is static binding and where it occurs
167. what is the package of most the AWT event that support
168. Does any tag exists in HTML to upload and download files
169. Can you give names of Container classes
170. nested try statements are possible
171. Is multiple inheritance allowed in Java? Why
172. What classes can be used to store arbitrary number of objects
173. How many times garbage collector will invoke an object?s finalize() method
174. A class can be a subclass of itself
175. Are there any tools available in java to create reports
176. Explain Connection Pooling
177. What are the names of Component subclasses that support painting
178. What are the sub-classes of a component class
179. Name two subclasses of the TextComponent class
180. Explain Public static void main
181. What is file class and what is its purpose
182. What is Remote Reference Layer
183. What are the names of interfaces that doesn't consists of methods
184. What are primitive Java types? How many are they and what are their names
185. What we have to do, when we don't want to implement all methods of an interface
186. Can a for statement loop indefinitely
187. What is the form of storage space in java
188. What are the latest versions in JAVA related areas
189. What is the minimum and maximum length of an identifier
190. What class is used to implement a Throwable array
191. What is the default initialized value of String type variable
192. What is the default initialized value of a Boolean type variable
193. When garbage collector invokes object?s finalize() method
194. How Applets & Servlets will communicate with each other
195. How do you compare two strings? any predefined method for this
196. How do you load an HTML page from an Applet
197. What are the differences between Java 1.0 and Java 2.0
198. How is rounding performed under integer division
199. What is "finally" keyword
200. What is hypertext
201. What is interface and its use
202. What is 'finally' method in Exceptions
203. What are blocks
204. How to do validation of the fields in any project
205. What is the Use of throws exception
206. What are access modifiers in Java
207. Different types of Layouts
208. Methods in Applet
209. Different types of modifiers
210. Name the packages in JDK
211. What are E and PI
212. What are virtual methods
213. What is Vector class
214. What are other modifiers
215. What are the operands of instanceof operator
216. What are packages and name a few
217. What are listeners in java and explain
218. What are Access Specifiers and Access Modifiers
219. What are advantages of using Java?s layout managers than windowing systems
220. What method is used to know the status of Checkbox
221. What are the interfaces defined by Java.lang package
222. What are the Object and Class that classes used for
223. What are command line arguments
224. How this statement determine which catch clause should be used to handle an exception
225. How many bits are allocated to represent character sets Unicode, ASCII,UTF-16,UTF-8
226. What are order of precedence and associativity, and how are they used
227. What are the advantages of the model over the event- inheritance model
228. What are the common problems you have faced while implementing Java
229. Name the components that are termed to be Heavy-weight component
230. What are primitive data types in Java
231. What problems will occur when you don?t use layout managers
232. What are the limitations for static method
233. What are the restrictions imposed by a Security Manager on Applets
234. Name the runtime exceptions that occurs frequently
235. types of applets
236. Name the types of 'priority'
237. What are virtual functions
238. What are types of Java applications
239. In what ways you can handle exception
240. Name the types of mouse event listeners
241. What are the traverses in Binary Tree
242. What services that container provides
243. What is an event
244. What is an enumeration class
245. What is an Iterator interface
246. What is a void return type
247. What is a stream? what are the different types and classes of Streams
248. What is a serializable interface
249. What is a reflection package
250. What is a native method