Can i do this in Java?

[DilLw33D]

can i compare two strings like so:

String line = "DOG";
if(line == "DOG);
//do some shit

is that valid or do i need to do something else?

 

[BLiSTeD]

i think there may be a string comparator function
or you may have to break it into tokiens and check it that way

 

[Sol]

You want to do something like line.equals("DOG");

 

[Infinity]

I think you have to use s1.equals(s2)

 

[Drakar]

http://leepoint.net/notes-java/25data/25strings/12stringcomparison.html

 

[FLOOR]

You want to do something like line.equals("DOG");

 

[BLiSTeD]

int compareTo(String str)
returns 0 if equal otherwise they are different

 

[yubyub]

You cant use == because you're comparing strings, an int or double however, would work just fine. Java can't compare strings unless you are using specific string functions.

 

[Cuda]

if(String1.equals(String2))

 

[DilLw33D]

word

 

[Pachacutec]

can i compare two strings like so:

String line = "DOG";
if(line == "DOG);
//do some shit

is that valid or do i need to do something else?

nothing can be done in java, ever. i suggest cobol, or pascal.

 

[Beren]

You cant use == because you're comparing strings, an int or double however, would work just fine. Java can't compare strings unless you are using specific string functions.

Case of it needing to be a primitive type to use the boolean expressions such as == != etc. Anything other then prim type it compares the memory addresses and thus they never match if my memory serves correct.

 

[red_one]

== for references (pointers)
.equals() or whatever for values

 

[Ruthven]

You can check for a null value with == in a String...just an fyi, it's not if(!stringvariable.equals(null)) it's if(stringvariable != null)

 

[DilLw33D]

ok ok ok
i figured this out last night... no one needs to reply to this anymore

 

[red_one]

if(stringvariable != null)

compares the reference, not the value
what you have there, good sir, is a null pointer