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 Why does Java make my variables become static?

[singam]

singam  

 Why does Java make my variables become static?

I'm supposed to get user input of Integers so I don't want it them to be static but it keeps complaining that I have a static reference. C programs don't do this.

I get the same Java Error in at line 21: cannot make static reference to non-static Integer

for this line:
Integer intResult = Integer.parseInt(result); //error: cannot make static reference to non-static Integer


or I tried using the primitive type int:
int intResult = result; //error: cannot make static reference to non-static Integer

but really I need to get it to be an object Integer

and I also tried putting new operator but that gets the same error:
Integer intResult = new Integer.parseInt(result); //error: cannot make static reference to non-static Integer

[polas]

polas  

 Re: Why does Java make my variables become static?

Can you post your entire code? Basically a static variable is one which exists across instances of the object (for instance it exists in memory once, which all object instances access.)

This commonly catches out novice Java programmers with reference to the main (entry) methods of Java which is static (one copy of it exists across the objects.)

What is the type of variable result, post the declaration of it.

[polas]

polas  

 Re: Why does Java make my variables become static?

And no C programs do not, because they are not OO and hence all variables and functions are the equivalent of Java static (unless you take care not to make them so.)

[WumpaFruit]

WumpaFruit  

 Re: Why does Java make my variables become static?

Is "result" an Integer object or an int variable?

Integer. parseInt() takes an Integer object and returns a primitive int.  So

Code:

Integer intResult = Integer.parseInt(result);

should really be:

Code:

int intResult = Integer.parseInt(result)

assuming that "result" is an Integer object.

I guess there are two ways that you can look at this:

1.  Converting from Integer object to int primitive type:

Code:

int intPrimitive = Integer.parseInt(integerObject);

2.  Converting from int primitive type to Integer object:

Code:

Integer integerObject = new Integer(intPrimitive);

I hope this makes sense!

[Admin]

Admin  

 Re: Why does Java make my variables become static?

@WumpaFruit: Thank you for posting that really make sense.

[katiedeneuve]

katiedeneuve  

 Re: Why does Java make my variables become static?

C programmers are not recommend, as Java variables and functions are stable and are as good as C scripts of C programs.