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Hi Friends, can u give me Real Time example for interface and abstract class.(With Banking Example)
4 14997Hi Friends, can you explain instance in java. In general instance means "occurence of something" . In java what is instance.
4 6233Hi Friends, I am beginner in java. what i know about synchonized keyword is,If more that one 1 thread tries to access a particular resource we can lock the method using synchronized keyword. Then after that how the lock is released and how next thread access that.Please explain with example.
5 6521Hi Friends, can you give difference between extending thread class and implementing runnable interface.
4 6757Hi Friends, I am new to java. Can u explain about thread concept.How i know one thread is locked, and how can i force or acquire another thread for lock . Finally how to know thread is released from lock. Explain types of lock(like method level and block level) in thread.
1 3768I have a sorting issue with a Hashmap. My constraint is that I MUST use the Hashmap and work with existing code. I do a database query and place the results in a Hashmap. When I iterate thru the Hashmap, it loses the original alphabetical sorting done by the database. So, my problem is that I must sort the results coming out of the Hashmap which is then placed into another class.
1 4624Real Time sample code for Encapsulation and Abstraction. where to use abstract and where to use specifies like public private.
2 9537What will happen inside init() in servlet. my interviewer asked servlet lifecycle. i said "once servlet is loaded in to memory init() will be called which performs servlet initialization " . Again interview asked what values will be initialized . what is difference between init() and init(ServletConfig config).
2 13376
What is externalizable?
Write a program in java to establish a connection between client and server?
Define linked list and its features with signature?
Can a constructor be private and how are this() and super() method used with constructor?
what is the difference between a threads start() and run() methods? : Java thread
Why is an interface be able to extend more than one interface but a class can’t extend more than one class?
What is a prefix function.write down a code to compute prefix function.
What is class variable java?
What is string builder?
What is meant by tab pans?
What is the role of the java.rmi.naming class?
What is the flag in java?
does java support pointers?
Why char array is preferred over string for storing password?
What are the basic control structures?
