Question

I would like to know why in Java it gives a compilation error by doing the following operations:

double d34324.34; //error
float f3342.34; //error

On the other hand:

long L32423424; // works fine
double D32432424; // works fine

So basically I would like to know why there is this limitation with the syntax use only for floating point values.

I am aware that if the letter identifier (D,d,F,f) is put at the end of the number it works, but still I would like to know why the other form does not work with floating points.
Just curiosity, I know if I type 3443.43434f it works.

Answer 1

double d34324.34

doesn’t assign a value of 34324.34 but tries to declare a variable with the invalid name d4324.34 .

You probably wanted

double myDouble = 34324.34d;
long myLong = 34324l;