Float vs. Double (float)

There are two kinds of floating-point types, float and double, which represent single- and double-precision numbers, respectively. Their width and ranges are shown here:

Name	Width in Bits	Range
double	64	1 .7e–308 to 1.7e+308
float	32	3 .4e–038 to 3.4e+038

package primitiveData;

public class PrimitiveDataTest {

public static void main(String[] args) {

float f = 1.23456789012345678901234567890f; //end with "f" to indicate this is a float type, otherwise, it is a double type by default

double d = 1.23456789012345678901234567890;

System.out.println(f);

System.out.println(d);

}

}

OutPut:

1.2345679

1.2345678901234567