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Interview Questions - Java
Please find answers for the below interview questions on attachment
What is the difference between procedural and object oriented programs?
What are the encapsulation, Inheritance and Polymorphism?
What is the difference between Assignment and Initialization?
What is OOPs?
What are class, constructor and Primitive data types?
What is an object and how do you allocate memory to it?
What is the difference between constructor and method?
What are methods and how are they defined?
What is the use of bin and Lib in JDK?
What is Casting?
How many ways can an argument be passed to a subroutine and explain them?
What is the difference between an argument and a parameter?
What are different types of access Modifiers?
What is final, Finalize() and finally?
What is UNICODE?
What is Garbage collection and how to call it explicitly?
What is finalize() method?
What are Transient and volatile modifiers?
What is method overloading and method overriding?
What is difference between overloading and overriding?
What is meant by inheritance and what are its advantages?
What is the difference between this() and super()?
What is the difference between super class and subclass?
What modifiers may be used with top-level class?
What are inner class and anonymous class?
What is a package?
What is a reflection package?
What is interface and its use?
What is an Abstract class?
What is the difference between integer and int?
What is a cloneable interface and how many methods does it contain?
What is the difference between abstract class and interface?
Can you have an inner class inside a method and what variables can you access?
What is the difference between string and buffer?
What is the difference between array and vector?
What is the difference between process and thread?
What is multithreading and what are the methods for inter thread communication and what is the class in which these methods are defined?
What is the class and interface in java to create the thread and which is the most advantageous method?
What are the states associated in the thread?
What is Synchronization?
When will you syncronize a piece of your code?
What is deadlock?
What is Deamon thread and which method is used o create the daemon method?
Are they any global variables in java, which can be accesses by other part of your program?
What is an applet?
What is the differences between applications and applets?
How does applet recognize the height and width?
When do you use codebase in applet?
What is the lifecycle of an applet?
How do you set security in applets?
What is an event and what are the models available for event handling?
What are the advantages of the model over the event-inheritance model?
What is source and listener?
What is adapter class?
What is meant by controls and what are different types of controls in AWT?
What is the difference between choice and list?
What is the difference between scrollbar and scrollpane?
What is a layout manager and what are different types of layout managers available in java AWT?
How are the elements of different layouts organized?
Which containers use a Border layout as their default layout?
Which containers use a Flow layout as their default layout?
What are wrapper classes?
What are Vector, Hashtable, LinkedList and Enumeration?
What is the difference between set and list?
What is a stream and what are the types of Streams and classes of the Streams?
What is the difference between Reader/Writer and InputStream/Output Stream?
What is an I/O filter?
What is serialization and deserialization?
What is JDBC?
What are drivers available?
What is the difference between JDBC and ODBC?
What are the types of JDBC Driver Models and explain them?
What are the steps involved for making a connection with a database or how do you connect to a database?
What type of driver did you use in project?
What are the types of statements in JDBC?
What is stored procedure?
How to create and call stored procedures?
What is servlet?
What are the classes and interfaces for servlets?
What is the difference between doPost and doGet methods?
What is the life cycle of a servlet?
Who is loading the init() method of servlet?
What are the different servers available for developing and deploying Servlets?
How many ways can we track client and what are they?
What is session tracking and how do you track a user session in servlets?
What is Server-Side Includes (SSI)?
What are cookies and how will you use them?
Is it possible to communicate from an applet to servlet and how many ways and how?
What is connection pooling?
Why should we go for interservlet communication?
Is it possible to call servlet with parameters in the URL?
What is Servlet chaining?
How do servlets handle multiple simultaneous requests?
What is the difference between TCP/IP and UDP?
What is Inet address?
What is Domain Naming Service(DNS)?
What is URL?
What is RMI and steps involved in developing an RMI object?
What is RMI architecture?
what is UnicastRemoteObject?
Explain the methods, rebind() and lookup() in Naming class?
What is a Java Bean?
What is a Jar file?
What is BDK?
What is JSP?
What are JSP scripting elements?
What are JSP Directives?
What are Predefined variables or implicit objects?
What are JSP ACTIONS?
How do you pass data (including JavaBeans) to a JSP from a servlet?
How can I set a cookie in JSP?
How can I delete a cookie with JSP?
How are Servlets and JSP Pages related?-
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