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When double-type is preferred over float-type in Java? |
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Answer» The double-type and the FLOAT-type are both used to represent floating point numbers in Java. However, for some situations double-type is better and in some cases float-type is better. Double-type is preferred over float-type if more precise and accurate result is required. The precision of double-type is up to 15 to 16 decimal points while the precision of float type is only around 6 to 7 decimal digits. Another reason that double-type may be preferred over float-type is that it has a larger range. It uses 1 bit for sign, 11 bits for exponent and 52 bits for MANTISSA while float-type only uses 1 bit for sign, 8 bits for exponent and 23 bits for mantissa. A program that demonstrates double-type and float-type in Java is given as FOLLOWS: public class Demo { public static void main(String []args) { double d = 55.637848675695785; float f = 25.657933f; System.out.println("Value of double = " + d); System.out.println("Value of float = " + f); } }The OUTPUT of the above program is as follows: Value of double = 55.637848675695786 Value of float = 25.657932 |
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