Java Reference
In-Depth Information
In the above expression,
i > 5
is evaluated first, and it returns
true
. Because the left-hand operand evaluated to
true
, the right hand operand is not evaluated, and the expression (
i > 5 || j > 10)
returns
true
.
Consider another example.
int i = 10;
int j = 15;
boolean b = (i > 20 || j > 10); // Assigns true to b
The expression
i > 20
returns
false
. The expression reduces to
false || j > 10. Because
the left-hand operand
to
||
is
false
, the right-hand operand,
j > 10
, is evaluated, which returns
true
and the entire expression returns
true
.
Logical OR Operator (|)
The logical
OR
operator (
|
) is used in the form
operand1 | operand2
The logical
OR
operator returns
true
if either operand is
true
. If both operands are
false
, it returns
false
. The
logical
OR
operator works the same way as the logical short-circuit
OR
operator, except for one difference. The logical
OR
operator evaluates its right-hand operand even if its left-hand operand evaluates to
true
.
int i = 10;
int j = 15;
boolean b = (i > 5 | j > 10); // Assigns true to b
The expression
i > 5
is evaluated first and it returns
true
. Even if the left-hand operand,
i > 5
, evaluates to
true
, the right-hand operand,
j > 15
, is still evaluated, and the whole expression (
i > 5 | j > 10)
returns
true
.
Logical XOR Operator (^)
The logical
XOR
operator (
^
) is used in the form
operand1 ^ operand2
The logical
XOR
operator returns
true
if
operand1
and
operand2
are different. That is, it returns
true
if one of the
operands is
true
, but not both. If both operands are the same, it returns
false
.
int i = 10;
boolean b;
b = true ^ true; // Assigns false to b
b = true ^ false; // Assigns true to b
b = false ^ true; // Assigns true to b
b = false ^ false; // Assigns false to b
b = (i > 5 ^ i < 15); // Assigns false to b
