Explain the common use of ejb?
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Describe life cycle of thread?
How do I know if I have jre or jdk?
What is the content of the Java 2 security policy file?
What is injection in java?
What is orm in java?
What is the most important feature of java?
In a barber shop there are 2 doors. customer come in 1 door, leave in other. minimum # of chairs. barber spend his life in cutting. always barber can cut 1 customer. few chairs in the shop. if barber busy customer waits, if chairs full, customer leave. if no customer, barber sleeps. treat barber and customer as 2 threads. you can use Semaphore class with arrive and depart and count as parameter.
If one class havent the constructor, it has normal method, then can i use super keyword to call the method form the sub class and vice verse?
What is savepoint in java?
What is Map,List,hashtable,ArrayList and difference between them??
What is the use of flatmap?
What is java ioc?