ifnonnull : jump if non-null : index : visitJumpInsn()
aload_1 ; push the object reference in local variable 1 onto the stack
ifnonnull Label ; if local variable isn't null, jump to Label
return ; return if local variable 1 is null
Label:
; execution continues here if local variable 1 is something other than null ...
| Before | After |
| objectref | ... |
| ... | ... |
| Type | Description |
| u1 | ifnonnull opcode = 0xC7 (199) |
| s2 | branchoffset |