NEED HELP PLZ! java integer - real program

[a_vatamanescu]

Hey eevryone. Im stuck at a program. The user inputs a number from which i have to make the program tell him/her if its either an integer or real. How would i do that?

i tried doin this:
if (answer < 0 && answer > 0)
c.drawString ("Your number: " + answer + ".. is an integer", 250, 200);
else
c.drawString ("Your number: " + answer + ".. is real", 250, 200);

BUT IT DOESNT WORK! if i input a decimal it gives me an error!. plz help me, i really need it!

[zylum]

wheres the part of the code where you get the input?

once you get the input then you could do:

code:

if (Math.floor(number) == number) {     System.out.println("this is an integer"); else {     System.out.println("this is not an integer"); }

[foobar247]

you could try making use of the string parsing functions in Integer class
so here you can test if some string can be parsed to int.

code:

try{                 Integer.parseInt(inputString);                 System.out.println("is an integer"); } catch(NumberFormatException e){                 System.out.println("not an int"); }

i'm not sure what was the desired effect of your code. as nothing would test true.

code:

if (answer < 0 && answer > 0)