istore_n : store integer in local variable <n> : index :

Description

Pops an int off the stack and stores it in local variable <n>, where <n> is 0, 1, 2 or 3. <n> must be a valid local variable number in the current frame.

'istore_n' is functionally equivalent to 'istore <n>', although it is typically more efficient and also takes fewer bytes in the bytecode.

Example

istore_0        ;store integer in local variable 0
istore_1        ;store integer in local variable 1
istore_2        ;store integer in local variable 2
istore_3        ;store integer in local variable 3

See also

lstore fstore dstore astore

Stack

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

Bytecode

Type	Description
u1	istore_0 opcode = 0x3C (59)
u1	istore_1 opcode = 0x3D (60)
u1	istore_2 opcode = 0x3E (61)
u1	istore_3 opcode = 0x3F (62)