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|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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|Like Discuss Correct / Improve  java   string class   string   immutable  immutability   string pool   garbage collection   advanced Asked in 5 Companies Expert|
|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 ?|
|Should we override finalize method ?|
|What are strong, soft, weak and phantom references in Java ?|
|Can we call the garbage collector explicitly ?|
|What does String intern() method do?|
|Which type of memory is cleaned / recovered by garbage collection - stack or heap ?|
|Java doesn't provide exclusive access to memory like C/C++ and other lower level languages ? What are the advantanges and disadvantages ?|