java - What is this method returning? -


what "(int)" in following return statement? 

public double calc(double amount){     return (int)(amount * 100)/100; }

i expecting method return same value passed in since i'm multiplying 100 , dividing 100 . . . bringing me original value yet when tested in compiler false. instance: 

    carinformation mycar = new carinformation("");     system.out.println(mycar.calc(34.86432456789));

i get:

34.0

why so?

after multiplication, cast int truncates beyond decimal point, 3486.432456789 becomes 3486, divided 100 34. it's overkill; no multiplication or division necessary, just: (int) amount. return value double, gets implicitly converted double: 34.0.


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