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About substraction of "double"

kayanaat sidiqui
Ranch Hand

Joined: Sep 04, 2008
Posts: 122
System.out.println(2.00 - 1.10);
result--> 0.8999999999999999

But,

System.out.println(4.00 - 1.10);
result--> 2.9

Why differences in results.
Please help me out.
marc weber
Sheriff

Joined: Aug 31, 2004
Posts: 11343

See Sun's tech tip, Some things you should know about floating-point arithmetic.


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kayanaat sidiqui
Ranch Hand

Joined: Sep 04, 2008
Posts: 122
Thanks
 
It is sorta covered in the JavaRanch Style Guide.
 
subject: About substraction of "double"
 
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