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Comparison Operators (Java and Delphi Cross Reference Guide)

By Mike Prestwood

Java versus Delphi: A side by side comparison between Java and Delphi.

Operators

A language symbol used for assignment, comparison, computational, or as a logical.

Comparison Operators

[Other Languages]

General Info: Round Floating Point Numbers

When comparing floating point numbers, make sure you round to an acceptable level of rounding for the type of application you are using.

Languages Focus

A comparison operator compares two values either literals as in "Hello" and 3 or variables as in X and Counter. Most languages use the same operators for comparing both numbers and strings. Perl, for example, uses separate sets of comparison operators for numbers and strings.

Java: ==, !=

The Java comparison operators are:

==	equal
!=	not equal
<	less than
>	greater than
<=	less than or equal
>=	greater than or equal

More Info / Comment

Delphi: =, <>

Common comparison operators:

=	equal
<>	not equal
<	less than
>	greater than
<=	less than or equal
>=	greater than or equal

Syntax Example:

//Does Delphi evaluate the math correctly? Yes!

//Refer to math.pas MaxSingle for more info.

if (0.1 + 0.1 + 0.1 = 0.3) then
  ShowMessage('correct')
else
  ShowMessage('not correct')

Delphi Comparison Operators (=, <>)