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precision

 
Neha Mittal
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What does "loss of Precision" mean?
(This is the thing I came across while studying 'Float' integer literals)
 
Jesper de Jong
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The float and double types can store floating-point numbers, but not with infinite precision. A float has about 6 or 7 decimal digits of precision, and a double has 15 or 16 decimal digits.

A floating-point literal in Java is by default a double. So you will get a "possible loss of precision" error if you do something like this:

float pi = 3.14159265358979;

You can add a letter "f" or "F" to make a floating-point literal a float:

float pi = 3.151593f;

(Note, it makes no sense to specify more than 7 digits for a float, because they won't fit into the float anyway).
 
Neha Mittal
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Thanks jesper!!
 
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