Java Interview Questions - Pramathi Technologies


Below questions asked in Pramathi Technologies telephonic interview - JAVA 4 years exp:

1. What is heap dump? 
  • A JVM heap dump is basically a "snapshot" of the Java heap memory at a given time.
  •  It is quite different than a JVM thread dump which is a snapshot of the threads.
  •  It is particularly useful when troubleshooting Java heap memory leaks and java.lang.OutOfMemoryError problems.

 "JVM heap dump generation is an intrusive process which will hang your JVM process until completion"

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