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Interview Type of Questions - 2
  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 ?
Author & Copyrights 2004: Narayanaswami Banukumar