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Logical Operators (VB.Net and Java Cross Reference Guide)

By Mike Prestwood

VB.Net versus Java: A side by side comparison between VB.Net and Java.

Operators

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

Logical Operators

[Other Languages]

Languages Focus

Logical operators perform conditional and, or, and not operations. Some languages support both binary logical operators that link two and unary logical operators negate (make opposite) the truth value of its argument. Finally, some languages short circuit logic. For example, with this or that, if this is an expression returning true, then that is never executed.

VB.Net:

VB.Net logical operators:

And	and, as in this and that	No Short Circuit
AndAlso	and, as in this and that	short circuits
Or	or, as in this or that	No Short Circuit
OrElse	or, as in this or that	short circuits
Not	Not, as in Not This
Xor	either or, as in this or that but not both

Syntax Example: 1 certification question.

'Given expressions a, b, c, and d:

If Not (a and b) and (c or d) Then

  'Do something.

End If

Java:

Java logical operators:

&&	and, as in this and that
\|\|	or, as in this or that
!	Not, as in Not This
&	boolean logical OR (not short circuited)
\|	boolean logical OR (not short circuited)
?:	Ternary (short for if-then-else)
~	Unary bitwise complement
<<	Signed left shift
>>	Signed right shift
>>>	Unsigned right shift
^	Bitwise exclusiv OR

Syntax Example:

//Given expressions a, b, c, and d:

if !((a && b) && (c || d)) {

  //Do something.