What is perm space?

Question

While learning about java memory profiling, I keep seeing the term \"perm space\" in addition to \"heap.\" I know what the heap is - what\'s perm space?

Answer 1

PermGen Space stands for memory allocation for Permanent generation All Java immutable objects come under this category, like String which is created with literals or with String.intern() methods and for loading the classes into memory. PermGen Space speeds up our String equality searching.