Java Programming Interview Questions

• Can you load server object dynamically? If so what are 3 major steps involved in it?
• Can you run product development on all operating systems?
• Considering notepad/IE or any other thing as process, What will happen if you start notepad or IE 3 times ? Where three processes are started or three threads are started?
• Difference : AWT and Swing?
• Difference : Abstract class and Interface?
• Difference : Grid and Gridbaglayout?
• Difference : Process and Thread?
• Difference : java and c++?
• Difference : process and threads?
• Does java support function overloading, pointers, structures, unions or linked lists?
• Does java support multiple inheritance? if not, what is solution?
• Explain 2-tier and 3-tier architecture?
• Explain about version control?
• Have you ever used HashTable and Directory?
• How can two threads be made to communicate with each other?
• How can we do validation of fields in project?
• How can you know about drivers and database information ?
• How do you download stubs from Remote place?
• How does thread synchronization occur in monitor?
• How java can be connected to database?
• How will you add panel to frame?
• I want to store more than objects in remote server? Which methodology will follow?
• In container there are 5 components. I want to display all component names, how will you do that?
• In htm form I have button which makes us to open another page in seconds. How will you do that?
• In htm page form I have one button which makes us to open new page in seconds. How will you do that?
• Is there any tag in htm to upload and download files?
• Meaning of Servelet? What are parameters of service method?
• Meaning of Session? Explain something about HTTP Session Class?
• Meaning of Static query and Dynamic query?
• Meaning of class loader? How many types are there? When will we use them?
• Meaning of cookies? Explain main features?
• Meaning of distributed application? Why are we using that in our application?
• Meaning of flickering?
• Meaning of function overloading and function overriding?
• 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?

Source: http://www.sharpprogrammer.com/interview-questions/java-programming-interview-questions/