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|Java - Interview Questions and Answers|
|Ans. String is immutable in java and stored in String pool. Once it's created it stays in the pool until unless garbage collected, so even though we are done with password it's available in memory for longer duration and there is no way to avoid it. It's a security risk because anyone having access to memory dump can find the password as clear text.|
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|Does garbage collection guarantee that a program will not run out of memory?|
|Describe, in general, how java's garbage collector works ?|
|Let's suppose we have an to destroy objects, Design a program to implement garbage collection ?|
|What are strong, soft, weak and phantom references in Java ?|
|Should we override finalize method ?|
|Can we call the garbage collector explicitly ?|
|What does String intern() method do?|
|Java doesn't provide exclusive access to memory like C/C++ and other lower level languages ? What are the advantanges and disadvantages ?|
|What is a finalize method ?|