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Why does java return positive infinity when it exceeds Double.Max_Value?

When I try to execute this code, how will the result be greater than Double.MAX_Value? Will overflow / undercompletion affect double datatype in java?

Code: 

   result = Double.MAX_VALUE * Double.MAX_VALUE;

   if (result > Double.MAX_VALUE) {
      // Some return statements.
   }
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From the Java Language Specification

The result of a floating point multiplication is determined by the rules of IEEE 754 arithmetic:

  • [...]
  • If the quantity of the product is too large to represent, we say that the operation is overflowed ; the result is the infinity of the corresponding sign .


Since it is Double.MAX_VALUE * Double.MAX_VALUE

too large to represent, its meaning becomes infinite.

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