[Music]
Welcome back to Code Chef. Imagine
you're checking if two conditions are
true at the same time, like did I finish
my homework
and is it before 10 p.m.?
That's where logical operators come in.
They help Java combine multiple
conditions into one decision. Think of
logical operators like switches. The A
and D operator is like two switches
controlling one light. Both must be on
for the light to glow. The O operator is
like two doors. If at least one is open,
you can pass through. The not operator
is like flipping a yes into a no or a no
into a yes. In Java, logical operators
are used to combine or invert boolean
values. There are three double amperand
a which is true if both conditions are true.
true.
double pipe o r which is true if at
least one condition is true exclamation
mark not which reverses the value true
becomes false and false becomes true
let's see an example we declare an
integer age equal to 18 and a boolean
has ticket equal to true now we check
age greater than or equal to 18 and has
ticket both are true so the result is
Age greater than or equal to 21 or has
ticket age is not enough but has ticket
is true. So the result is true. Has
ticket flips true to false. A few quick
tips. Use and when both conditions must
be true. Use or when only one condition
is enough. Use not when you need the
opposite of a condition.
Logical operators are especially
powerful in if statements and loops. Now
it's your turn. Try the code chef
problem admission eligibility where
you'll check if a student passes based
on marks or sports quota. Today you
learned that logical operators help
combine or invert conditions and or and
not return true or false and they're the
backbone of decision-m in Java code.
