iinc :
increment integer in local variable : index : visitIincInsn()
- Description
- iinc increments the int held in the local variable
<varnum> by <n>. The iinc instruction takes two
parameters: <varnum> is an unsigned integer which indicates which local
variable should be used. <n> is the integer amount to increment or
decrement the variable by. <varnum> must be a valid local variable number
in the current method's frame.
- Example
iinc 1 10 ; increment local variable 1 by 10.
iinc 1 -1 ; decrement local variable 1 by 1.
- See also
- wide
- Stack
- Bytecode
|
Type
|
Description |
|
u1
|
iinc
opcode = 0x84 (132)
|
|
u1
|
<varnum> |
|
s1
|
<n> |
There
is also a wide format for this instruction, which supports access to
all local variables from 0 to 65535, and values of <n> between -32768 and
32767:
|
Type
|
Description |
| u1 |
wide
opcode = 0xC4 (196)
|
| u1 |
iinc
opcode = 0x84 (132)
|
| u2 |
<varnum> |
| s2 |
<n> |