Boolean Logic & Conditional Statements
What will the expression (7 >= 7) evaluate to?
null
true
error
false
What would be the result of the Boolean expression ?
null
"7 > 3"
true
false
Which statement correctly checks for an ArrayIndexOutOfBoundsException
when accessing an array element?
try { int value = myArray[index]; } catch (ArrayIndexOutOfBoundsException e) { }
if (myArray[index]) { }
for(int i : myArray) { int value = myArray[i]; }
while (index < myArray.length) { int value = myArray[index]; }
What is the result of the boolean expression ?
<
false
true
=
When chaining together multiple equality checks with logical ORs in Java (||
) for different integer variables where two have equal value, what boolean result occurs?
Compilation error due to operator precedence
Runtime exception due to invalid comparison
True
False
What is the result of the boolean expression ?
false
true
=
<=
Which modification ensures that the boolean expression (a == b || c)
evaluates as false only when both a != b
and not-c
are true?
Inverting all operators as (a != b && !c)
Removing '==' and using (a = b || c)
Adding parentheses as (a == b || c) && !(a != b && !c)
Reversing operands as (b == a || c)

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What is the result of the boolean expression ?
!=
false
true
In terms of boolean expressions evaluation optimization, what is a high-complexity scenario often underestimated by novice programmers?
Prioritizing conditions based on their likelihood of being true to exploit short-circuit logic fully.
Using bitwise operators instead of logical ones when operations are independent of each other's results.
Excessive short-circuit evaluation avoidance leading to unnecessary evaluations in deeply nested conditions.
Applying De Morgan's laws consistently across all boolean expressions within complex algorithms.
Given two variables boolean x = true;
and boolean y = false;
, what would be the result of (x || y) && !(x && y)
?
The expression causes a compile-time error.
null
true
false