Core Java - Interview Questions and Answers for 'Memory leak' | Search Interview Question

Core Java - Interview Questions and Answers for 'Memory leak' - 6 question(s) found - Order By Rating

Q1. Should we do anything to avoid memory leaks in Java ?

Ans. Java has a intrinsic way of checking leaks and reclaiming memory called garbage collection. Moreover Java doesn't support pointer arithmetics , so there is very low comparative chance of memory leaks, compared to C,C++

Though there may be tools that may audit code to make sure that we are not leaving much for the garbage collection to work but I have never heard anyone doing anything for memory leaks in Java.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve memory leak in java}

Q2. Explain memory leaks and how to prevent them.

^{This question was recently asked at 'Polaris'.This question is still unanswered. Can you please provide an answer.}

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve memory leak Asked in 1 Companies}

Q3. How do you check memory leak in Java?

Core Java

Ans. You need to capture heap dump when it's in the healthy state. Start your application. Let it take real traffic for 10 minutes. At this point, capture heap dump. Heap Dump is basically the snapshot of your memory. It contains all objects that are residing in the memory, values stored in those objects, inbound

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve memory leaks heap dump Asked in 1 Companies intermediate}

Q4. What is memory leak ? How Java helps countering memory leaks compared to C++ ?

Core Java

Ans. Memory Leak is a situation wherein we have a reserved memory location but the program has lost its reference and hence has no way to access it.

Java doesn't have concept of Pointers, Moreover Java has concept of Garbage collection that frees up space in heap that has lost its references.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve memory leak garbage collection intermediate frequent}

Q5. Name few tools for probing Java Memory Leaks ?

Ans. JProbe, OptimizeIt

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve java tools jvm memory management memory leaks jprobe optimeit architecture technical lead}

Q6. How substring() method of String class create memory leaks?

Core Java

Ans. substring method would build a new String object keeping a reference to the whole char array, to avoid copying it. Hence you can inadvertently keep a reference to a very big character array with just a one character string.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve java string class string substring memory leaks jvm memory management advanced architecture technical architect technical lead expert}

Search Interview Questions

Help us and Others Improve. Please let us know the questions asked in any of your previous interview.