Java Interview Questions - 2

• 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?