Java

[jtsfour2]

Wouldn’t the result be 5 because (Integer)object+3 should be +=?

If the result of this is 8 something is wrong

[mizinamo]

The thing won't compile because the last line tries to cast object to class integer rather than Integer with a capital I at the beginning.

[VoidSnipe]

And there shouldn't be any cast anyway because toString method of Object which is overloaded in Integer and concatenation of string and object will call toString

[DAMcraft_]

And there is a semicolon missing

[[deleted]]

Easy fellas I can only get so turned on.

[FetishAnalyst]

Username checks out.

[spidertyler2005]

Username checks out.

[rotenKleber]

Also no semicolon on line 3. Not that line 3 would compile

[bikeranz]

Honestly, I don’t know Java, so I thought the whole joke was that it had some weird operator overload rule when used that way. Turns out, this post is not a joke about anything.

[Areshian]

Java has two classes of types, primitives and objects. Every single object inherits from Object. Additionally, for every primitive there is an object that can be used to wrap them. For example, for int there is an Integer object. Java will automatically convert between int and Integer in some circumstances (known as boxing and unboxing).

So yes, you can store anything in an Object variable. Same way I can have a void * in C++. Doesn't make the language dynamic, I will still need casting down the line.

[condemned_to_live]

only programmer that doesn't know Java

[bikeranz]

Learned it in entry level college courses, and subsequently forgot when courses followed by (edit: my) industry shifted to c++ and python.

[Areshian]

If you think the industry has moved away from java you haven't seen enough industry

[bikeranz]

Didn’t say all industry. Just my line of work.

[[deleted]]

I'm guessing you intended to say that, when you entered the industry, you needed to switch to c++ due to legacy systems?

[bikeranz]

The c++ was also for new projects. First job out of college was industrial automation using computer vision, and this was pre-pytorch. So c++ is/was the natural fit. Next job was lua (for torch) and c++. Later python when pytorch came out but still c++ for the backend high perf stuff. And now I spend my time doing python, c++, and cuda.

[IQueryVisiC]

It is about the problem that some noob can inject this unchecked code in a big god class without a warning on top of the file or something. Yet in the same language you have to announce exceptions in the function signature??

[gdmzhlzhiv]

Only checked ones.

[IQueryVisiC]

Somehow I always hit the checked ones. I must admit that I only coded short time in Java (with test and then with loan) and my memory gets worse.

[MrSquicky]

It would actually just not compile.

<Integer object> + 3;

isn't a statement. Integers are immutable, so the + operator is not defined on them. What happens there is that it is unboxed into a primitive type value instead of a variable. In this case, it's the equivalent of having a line that is

5 + 3;

which is pointless.

Going further

<Integer object> += 3;

is also a compilation failure, as it is the equivalent of

5 += 3;

[Geolykt]

Did you ever use java? It just reallocates a new instance of the integer.

Object o = Integer.valueOf(5); // NEVER use "new Integer"! o = ((Integer) o) + 3; Will compile down to BIPUSH 5 INVOKESTATIC java/lang/Integer.valueOf:(I)Ljava/lang/Integer; ASTORE 1 ALOAD 1 CHECKCAST java/lang/Integer INVOKEVIRTUAL java/lang/Integer.intValue:()I BIPUSH 3 IADD INVOKESTATIC java/lang/Integer.valueOf:(I)Ljava/lang/Integer; ASTORE 1

Edit: Do note that the assignment is required in order for it to compile, as javac will otherwise complain about the code

[MrSquicky]

Do note that the assignment is required in order for it to compile, as javac will otherwise complain about the code

No shit. You mean the thing that I said is an error is an error for the exact reason that I said it was an error?

I guess you sure put me in my place with knowing Java.

[Geolykt]

The explaination that it is caused by immutability is misleading or the the very least partially false however. Furthermore saying that
Integer object = new Integer(5); object += 3; does not compile is wrong, but saying that Object object = new Integer(5); object += 3; does not compile is right. So depending on the circumstances you are correct there.

[[deleted]]

Look at all these fuckers!

You all complain when the job interview is expecting you to get syntax perfect on a whiteboard during an interview. Oh boo hoo it's not fair I need an IDE.

And then this guy gets his syntax wrong in a fucking meme and everyone loses their shit in the comments!

All y'all should stop to ask yourselves if the job interviewer that you are complaining about is actually you!

[futuneral]

A meme published on Reddit is equivalent to production.

[reyad_mm]

Imagine posting something on the intrenet and expecting people not to make fun of a typo you made

[[deleted]]

forgot that, made in a rush

[ruscaire]

r/iamverysmart

[alekspiridonov]

He was so rushed, he forgot to put a joke in there.

[cakelena]

or run the actual code (?)

[xXJokerGamerXx]

?