java - What do F and D mean at the end of numeric literals? -


i've seen of symbols, cannot find strange it,

double d = 5d; float f = 3.0f;

what d , f behind 5 means?

means these numbers doubles , floats, respectively. assume have

void foo(int x); void foo(float x); void foo(double x);

and call

foo(5)

the compiler might stumped. that's why can 5, 5f, or 5.0 specify type.


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