Java Integer: what is faster comparison or subtraction?
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by Vladimir
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Published on 2010-04-28T10:59:44Z
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2010/04/29
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I've found that java.lang.Integer implementation of compareTo method looks as follows:
public int compareTo(Integer anotherInteger) {
int thisVal = this.value;
int anotherVal = anotherInteger.value;
return (thisVal<anotherVal ? -1 : (thisVal==anotherVal ? 0 : 1));
}
The question is why use comparison instead of subtraction:
return thisVal - anotherVal;
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