public class TemperatureConverter $\{$

public static void main$($String$[]$ args$)\{$

$//$ Declare the constants.

final double MIN$\_$FAHRENHEIT $=-459\mathrm{.}67$;

$//$ Declare the variables.

double fahrenheit;

double convertedDegrees $=0$;

int tempScale;

String tempScaleStr$=""$;

$//$ Creating the Scanner object

Scanner keyboard $=$ new Scanner$($System$.$in$)$;

System.out.print$("$Enter the temperature in Fahrenheit: $")$;

fahrenheit $=$ keyboard.nextDouble$()$; $//$ Set a breakpoint here

$//$ Verify the user's input

if $($fahrenheit $<$ MIN$\_$FAHRENHEIT$)\{//$ first if$-$statement: Set a breakpoint here

System.out.print$("$The temperature must be greater than or equal to $"+$ MIN$\_$FAHRENHEIT$)$;

System.exit$(0)$;

$\}$

System.out.print $($

"Enter the temperature scales you want to convert to:

$"+$

$"1.$ Kelvin

$"+$

$"2.$ Rankine

$"+$

$"3.$ Reaumur

$"+$

$"4.$ Celsius

$"+$

"Enter a temperature scale: $")$;

tempScale $=$ keyboard.nextInt$()$;

if $($tempScale $<1||$ tempScale $>4)\{//$ Second$-$if statement: Set a breakpoint here

System.out.println$("$Unknown temperature scale $-"+$

$"$ cannot do calculation. Bye"$)$;

$\}$

else $\{$

if $($tempScale $==1)\{//$ Set a breakpoint here

convertedDegrees $=($fahrenheit $-32)*5/9+273\mathrm{.}15$;

tempScaleStr$=$"Kelvin";

$\}$ else if $($tempScale $==2||$ tempScale $==3)\{$

convertedDegrees $=$ fahrenheit $+459\mathrm{.}67$;

tempScaleStr$=$"Rankine";

$\}$ else if $($tempScale $==3)\{$

convertedDegrees $=($fahrenheit $-32)*4/9$ ; $//$ Set a breakpoint here

tempScaleStr$=$"Reaumur";

$\}$ else $\{$

convertedDegrees $=($fahrenheit $-32)*5/9$; $//$ Set a breakpoint here

tempScaleStr$=$"Celsius";

$\}$

System.out.println$($fahrenheit $+"$ degrees Fahrenheit is $"+$ convertedDegrees $+"$ degrees $"+$ tempScaleStr $+".")$;

$\}$

keyboard.close$()$;

$\}$

How do I fix my code since I already try to debugg it