iload : retrieve integer from local variable : index : visitVarInsn()

Description

Pushes the int value held in a local variable onto the operand stack. The iload instruction takes a single parameter, <varnum>, an unsigned integer which indicates which local variable to use. The single-word int value held in that local variable is retrieved and placed on the stack. <varnum> must be a valid local variable number in the current method's frame.

Example

bipush 5        ; push 5 onto the stack
istore 1        ; pop 5 off of the stack and store in local variable 1
iload 1         ; push the int in local variable 1 (the value 5)
                ; back onto the stack

See also

aload fload lload dload astore fstore lstore dstore istore

Stack

Before	After
...	int-value
	...

Bytecode

Type	Description
u1	iload opcode = 0x15 (21)
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	iload opcode = 0x15 (21)
u2	<varnum>