? in Java

[Abuse]

@tortoise

@ENC

Thanks! I undestand ? in Java…

HOwever I would like to ask… is there any other special characters like ? used in java and what are they used for and how they are used?

^^

CHeers!

You mean punctuation characters? Sure, there are plenty. Almost all of them you are well aware of (I sure hope you know what the semi colon is used for, for example)

Maybe one you’re not thinking of is in Java 5, the new “foreach” loop which uses a colon

for(Foo foo : myFoos) {
foo.doSomething();
}

it would have been nicer if that loop could have been

foreach(Foo foo in myFoos) {
…
}

as it is in C#, but introducing new keywords to a language is risky, and so Sun decided to not go that route. If nothing else, old programs that had “foreach” and “in” as variable names would have failed to compile.

Infact, it’d probably be easier to list the punctuation characters that don’t have a special meaning!
The only common ones I can think of that have no meaning in Java, and are not valid characters in an identifier, are these 3:- #¬`

[ENC]

Hmm… i c

Thanks! ^^