what the classname like [C [B [[C is,when i exec "jmap -histo:live 4984"?

Question

And is always has most instances, just like this

  enter codnum     #instances         #bytes  class name
----------------------------------------------
   1:         82828       10033408  [C
   2:         39920        6012864  [B
   3:         18752        1950208  org.springframework.boot.loader.jar.JarEntry
   4:         81007        1944168  java.lang.String
   5:         16542        1455696  java.lang.reflect.Method
   6:         37512        1200384  org.springframework.boot.loader.util.AsciiBytes
   7:         18752        1050112  org.springframework.boot.loader.jar.JarEntryData

These are JVM signatures for `char[]`, `byte[]` and `char[][]` classes respectively. — apangin, Jun 28 '18 at 09:46
https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html#getName-- — Holger, Jun 28 '18 at 21:13

score 1 · Answer 1 · edited Jun 29 '18 at 18:51

1

already has answer in comments

These are JVM signatures for char[], byte[] and char[][] classes respectively. – apangin docs.oracle.com/javase/8/docs/api/java/lang/… – Holger

edited Jun 29 '18 at 18:51

Holger

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answered Jun 29 '18 at 01:09

Caion

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So do most of the [C allocations actually come from the implementation of String? – Gili Garibi Aug 30 '20 at 08:21

what the classname like [C [B [[C is,when i exec "jmap -histo:live 4984"?

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