ifnull : jump if null : index : visitJumpInsn()
aload_1 ; push the object reference in local variable 1 onto the stack
ifnull Label ; if local variable 1 is null, jump to Label
return ; return if local variable 1 isn't null
Label:
; execution continues here if local variable 1 is null...
| Before | After |
| objectref | ... |
| ... | ... |
| Type | Description |
| u1 | ifnull opcode = 0xC6 (198) |
| s2 | branch-offset |