Java Interview Questions - 2

Tuesday, March 18, 2008

  • Suppose if we have variable ‘I’ in run method, if I can create one or more thread each thread will occupy separate copy or same variable will be shared?
  • Tell some latest versions in JAVA related areas?
  • What are JVM.JRE, J2EE, JNI?
  • What are Normalization Rules? Define Normalization?
  • What are abstract classes?
  • What are adapter classes?
  • What are advantages of java over C++?
  • What are benefits if Swing over AWT?
  • What are byte codes?
  • What are files generated after using IDL to java compiler?
  • What are session variable in servlets?
  • What are statements in Java?
  • What are streams?
  • What are swing components?
  • What are traverses in binary tree?
  • What are virtual functions?
  • What do you know about garbage collector?
  • What do you mean by light weight and heavy weight components?
  • What do you mean by multithreading?
  • What is JAR file?
  • What is JFC?
  • What is JNI?
  • What is base class for all swing components?
  • What is client server computing?
  • What is constructor and virtual function? Can we call virtual function in constructor?
  • What is corresponding layout for card in swing?
  • What is difference abstract class and interface?
  • What is exact difference in between Unicast and Multicast object? Where will it be used?
  • What is functionability stubs and skeletons?
  • What is functionality of stub?
  • What is interface?
  • What is layout for toolbar?
  • What is light weight component?
  • What is main functionality of Prepared Statement?
  • What is main functionality of remote reference layer?
  • What is mapping mechanism used by java to identify IDL language?
  • What is middleware? What is functionality of web server?
  • What is polymorphism?
  • What is protocol used by server and client?
  • What is role of Web Server?
  • What is root class for all java classes?
  • What is serializable interface?
  • What is serialization?
  • What is thread?
  • What is update method called?
  • What is use of interface?
  • What is user defined exception?
  • When will you use interface and abstract class?
  • Where are card layouts used?
  • Why do we use oops concepts? What is its advantage?
  • Why do you canvas?
  • Why does java not support multiple inheritance?
  • Why is java not fully objective oriented?
  • Why is java not pure oops?
  • Why java is considered as platform independent?
  • Why there are some null interface in JAVA? What does it mean? Give some null interface in JAVA?
  • Write down how will you create Binary tree?
  • Write program for recursive traverse?
  • what is meant wrapper classes?


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