Follow-up questionsIf the candidate misses one of the requirements for immutability, invent a scenario in which immutability is violated and see how they handle it.You could ask about the internal data structure that was chosen (here ArrayList). Alternatives are Vector (needless synchronization) ...
Tight coupling generally happens when a class knows too much about the internal working of the dependent classes. Many times, we cannot change one component without changing the other. In the following example, we use the ReportService class that prepares the data and writes a PDF report using...
I have read the post of hashmap internal working and am quite clear of it’s working now. But at the same time am little bit confused. Could you kindly make your time to explain me the following: 1. How to relate hashcode of objects, hashcode of keys and the array location/bucket co...
Looking forward to appear in Java Interview, here are the key Java Interview Questions with Answers only for you. - aatul/Java-Interview-Questions-Answers
to previous Java collection interview question. Here also bothLinkedListandArrayListare List implementation but there internal data-structure is different, one is derived from Array while other is derived from LinkedList. SeeLinkedList vs ArrayList in Javato answer this Java Collection interview question....
20xx and started the way to pursuing my studies. After about half year's hard work, I'm finally standing before you honorable professors now. I'm really excited . Though I've sacrificed much on my way to pusuing studies, I believe it's worthwhile. I believe working hard will finally ...
1. Bootstrap Class Loader –It loads JDK internal classes, typically loads rt.jar and other core classes for example java.lang.* package classes 2. Extensions Class Loader –It loads classes from the JDK extensions directory, usually $JAVA_HOME/lib/ext directory. 3. System Class Loader –It...
The advantage of black-box testing is that it does not need to change if the tested module changes’ internal working. If the functionality changes, it is another story. It is easier to refactor, optimize, simplify, beautify your code if there are clean unit tests that do not depend on ...
We always ask questions like, “How do you handle changes mid-project?” and “What’s your communication process?” Pro Tip: Look for teams that are transparent and easy to talk to. A good working relationship is just as important as technical expertise. Make a Decision Choose the partne...
and CountDownLat ch can be used. The following figure is an example of using LockSupport to control alternate printing of two threads. The internal implementation principle of LockSupport is to use UNSAFE to control a semaphore to change between 0 and 1, so that the alternate printing of two...