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Core Java - Interview Questions and Answers for 'Permanent generation' - 2 question(s) found - Order By Newest

 Q1. What is PermGen or Permanent Generation ?Core Java
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Ans. The memory pool containing all the reflective data of the java virtual machine itself, such as class and method objects. With Java VMs that use class data sharing, this generation is divided into read-only and read-write areas. The Permanent generation contains metadata required by the JVM to describe the classes and methods used in the application. The permanent generation is populated by the JVM at runtime based on classes in use by the application. In addition, Java SE library classes and methods may be stored here.

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   Like         Discuss         Correct / Improve     java   jvm   memory management   permgen   permanent generation   advanced   architecture     Asked in 9 Companies      expert


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 Q2. What is metaspace ?Core Java
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info@buggybread.com
Ans. The Permanent Generation (PermGen) space has completely been removed and is kind of replaced by a new space called Metaspace. The consequences of the PermGen removal is that obviously the PermSize and MaxPermSize JVM arguments are ignored and you will never get a java.lang.OutOfMemoryError: PermGen error.

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   Like         Discuss         Correct / Improve     java   jvm   memory management   permgen   permanent generation   metaspace   advanced   architecture      expert


Related Questions

  Does garbage collection guarantee that a program will not run out of memory?
  What are different ways to create String Object? Explain.
  Describe what happens when an object is created in Java ?
  Describe, in general, how java's garbage collector works ?
  What are various types of Class loaders used by JVM ?
  What are strong, soft, weak and phantom references in Java ?
 What will happen if we don't have termination statement in recursion ?
 Why two types of memory - stack and heap are required by Java ?
  Different types of memory used by JVM ?
  What is a class loader ? What are the different class loaders used by JVM ?



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