istore : store integer in local variable : index : visitVarInsn()

Description

Pops an in off the stack and stores it in local variable <varnum>. The istore instruction takes a single parameter, <varnum>, an unsigned integer which indicates which local variable should be used. <varnum> must be a valid local variable number in the current frame.

Example

bipush 10       ; push 10 onto the stack
istore 3        ; pop 10 off of the stack and store it in local variable 3

See also

lstore fstore dstore astore wide

Stack

Before	After
value	...
...	...

Bytecode

Type	Description
u1	istore opcode = 0x36 (54)
u1	<varnum>

There is also a wide format for this instruction, which supports access to all local variables from 0 to 65535:

Type	Description
u1	wide opcode = 0xC4 (196)
u1	istore opcode = 0x36 (54)
u2	<varnum>