jmap -histo pid 输出的[C [B [I [S methodKlass的含义

[bozb@test ~]$ jmap -histo:live 19947 |head

 num     #instances         #bytes  class name
----------------------------------------------
   1:         93649       11589960  [C
   2:         92074        2209776  java.lang.String
   3:         17181        1511928  java.lang.reflect.Method
   4:         46266        1480512  java.util.concurrent.ConcurrentHashMap$Node
   5:          5284        1365360  [B
   6:         11567        1300024  java.lang.Class
   7:          5991        1188680  [I

[C is a char[]
[S is a short[]
[I is a int[]
[B is a byte[]
[[I is a int[][]

 

 

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