File APIs for Java Developers
Manipulate DOC, XLS, PPT, PDF and many others from your application.
http://aspose.com/file-tools
The moose likes Beginning Java and the fly likes Compiler says Missing return statement??? Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login
JavaRanch » Java Forums » Java » Beginning Java
Bookmark "Compiler says Missing return statement???" Watch "Compiler says Missing return statement???" New topic
Author

Compiler says Missing return statement???

Mike Kelly
Ranch Hand

Joined: Jul 18, 2001
Posts: 78
Hi, I tried to write code to test some of the Math methods(), but when I tried to compile, I get a "missing return statement double myMethod" from compiler. Please anyone help

class Testi {
double a = 90.7;
double b = myMethod();
public static void main(String arg[]) {
Testi t = new Testi();
t.myMethod();
}
double myMethod(){
Math.ceil(a);
System.out.println(b);
}
}
Rob Ross
Bartender

Joined: Jan 07, 2002
Posts: 2205


You declare that this method returns a double, don't you? It says "double myMethod()". That tells the compiler, as well as anyone using this class, to expect a double value to be returned when the method ends.
But you're not returning *anything*, let alone a double value.


Rob
SCJP 1.4
Mike Kelly
Ranch Hand

Joined: Jul 18, 2001
Posts: 78
Thanks for your response Rob, would you mind elaborating?
Rob Ross
Bartender

Joined: Jan 07, 2002
Posts: 2205
hmm, if you're asking how a method returns a value then this really belongs in the beginner section.
Anyway, are you familiar with the return statement? It causes control to exit the current method and return to the caller of that method. If you include a value after the return, that value is returned to the caller.
for example...
int anInt = getInt(); //line 1
public int getInt()
{
return 4;
}
After line 1 completes, the variable anInt will contain the int value 4, because that is the value returned from the method call.
Mike Kelly
Ranch Hand

Joined: Jul 18, 2001
Posts: 78
Thanks, you're too kind.
 
I agree. Here's the link: http://aspose.com/file-tools
 
subject: Compiler says Missing return statement???