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Join Date: Oct 2004
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Light Poster
heres the start
public class work
{
public static void main (String [] args)
{
int number = 1;
}
public static boolean ifstate()
{
if ( number == 0 )
blah blah
}
question - how do I get the second method to call on the varible from the first.
thanks
public class work
{
public static void main (String [] args)
{
int number = 1;
}
public static boolean ifstate()
{
if ( number == 0 )
blah blah
}
question - how do I get the second method to call on the varible from the first.
thanks
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Join Date: Sep 2004
Posts: 84
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Rep Power: 4
Solved Threads: 1
Junior Poster in Training
It is a matter of scope.
Put
outside the Main method (at the begining of your class.)
Look up the deffinition of scope in Java to learn more
Put
int number = 1
Look up the deffinition of scope in Java to learn more
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Join Date: Nov 2004
Location: Netherlands
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A better way is to pass it to the second method as a parameter. Especially since main is static and pulling the variable outside main would cause all kinds of other problems (especially if multiple instances of the class are created).
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how do you "pass it to the second method as a parameter"
is it
public static int ifstate(int number)
????
is it
public static int ifstate(int number)
????
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Junior Poster in Training
Try this (in reference to passing the variable):
public class work {
public static void main (String [] args) {
boolean booleanAnswer;
int number = 1;
// Passes copy of number to ifstate
booleanAnswer = ifstate(number);
}
public static boolean ifstate(int passedNumber) {
if ( passedNumber == 0 )
//blah blah
}
Let me know if it is not clear
}//end class •
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not clear, i dont need a boolean , sorry to have had posted it at the top
i just need a simple number to pass
i just need a simple number to pass
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Originally Posted by jerbo
It is a matter of scope.
Put
outside the Main method (at the begining of your class.)int number = 1
Look up the deffinition of scope in Java to learn more
i did that and got
non-static variable thirdNo cannot be referenced from a static context
???
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quick question
how do you also pass(call) more than one number/char/boolean at a time?
(or all 3 types at once)
how do you also pass(call) more than one number/char/boolean at a time?
(or all 3 types at once)
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Junior Poster in Training
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Originally Posted by jerbo
Try this (in reference to passing the variable):
public class work { public static void main (String [] args) { boolean booleanAnswer; int number = 1; // Passes copy of number to ifstate booleanAnswer = ifstate(number); } public static boolean ifstate(int passedNumber) { if ( passedNumber == 0 ) //blah blah } Let me know if it is not clear }//end class
OK, here we go.
The reason for the boolean is you declared 'ifstate' with a return type of boolean. In reality, your "blah blah" (which I assume is shorthand for the remaining code in your method,) would contain a return statement of type boolean.
Where did you place "int number = 1;" when you placed it outside of main?
If you placed it outside of main, it should look like this:
public class work {
int number = 1; // Creates the variable outside of the class
public static void main (String [] args) {
boolean booleanAnswer;
// Passes copy of number to ifstate
booleanAnswer = ifstate(number);
}
public static boolean ifstate(int passedNumber) {
if ( passedNumber == 0 )
//blah blah
}
Let me know if it is not clear
}//end classTo declare and pass multiple parameters you separate them with a coma.
//Passing to a method
MyMethod(1, parm2, "Parm3");
//The declared method would look like this:
public void MyMethod(int p1, double p2, String p3) {
// Your code here
}Note, in my example above, I passed an Integer, a Double, and a String value. Also, since I have a 'void' return type I did not need to assign anything. I just called the method by specifying the name (and passing the parameters.)
My suggestion is to start reading some more on the basic syntax for Java.
Most of what I have tried to explaine to you is very basic, and you should be able to understand it better with a good book on Java.
If you have had any VB programming the consepts are simular.
Good Luck!
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Join Date: Nov 2004
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have ever coded anything in Java before?
If not have ever read a single tutorial or beginners' book about Java?
All these questions are so basic they're part of the very earliest you should have been taught.
If not have ever read a single tutorial or beginners' book about Java?
All these questions are so basic they're part of the very earliest you should have been taught.
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