Variables
To simplify things let us decide to:
- Convert the input string to an
int variable.
- Evaluate the formula using
integer arithmetic.
- Save the result as an
int.
All this work will be done with the methods and variables
of an object.
Call the class of the object fahrConvert.
With these decisions,
the application code can be sketched out:
public class fahrConvert
{
int fahrTemp ; // input from the user: fahrenheit temperature
int celsTemp ; // result: celsius temperature
fahrConvert() // constructor for fahrConvert
{
. . . . .
}
// The application
public void convert( )
{
celsTemp = ((fahrTemp-32) * 5) / 9;
}
. . . . .
public static void main ( String[] args )
{
fahrConvert fahr = new fahrConvert() ;
. . . . .
}
}
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We could continue on from here and develop a non-GUI application where main()
does input and output.
You might do this if you wanted to debug the application code before working on the
GUI.
Now give some thought to the graphical interface.
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