How hashmap works in java?
Why do we create threads in java?
How to sort the elements in HashMap
explain Anonynous inner class?
What is the benefit of inner / nested classes ?
What is the difference between char and char *?
What's the difference between an abstract class and interface in java?
What is structure of java heap? What is perm gen space in heap?
What is final keyword in java? Give an example.
How can I debug the Java security exceptions and AccessControlExceptions?
In java how do we copy objects?
What is the difference between preemptive scheduling and time slicing?
Which command from the jdk compiles a java program?