Compound Boolean Expressions

Ethan Taylor
6 min read
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Study Guide Overview
This study guide covers conditional statements in Java, focusing on nested conditionals, boolean logical operators (&&
, ||
, !
), and compound conditional statements. It explains the order of operations for boolean operators, emphasizes code readability through indentation, and provides examples, practice questions (multiple-choice and free-response), and exam tips.
#AP Computer Science A: Conditionals - The Night Before 🚀
Hey! Let's make sure you're totally set for tomorrow. We're going to break down conditionals, make them super clear, and get you feeling confident. Let’s dive in!
#Nested Conditionals: Level Up Your Logic
Sometimes, one if
isn't enough. That's where nested conditionals come in. Think of it as an if
statement inside another if
statement. It's like a set of Russian nesting dolls, each one depending on the one before it.
#How They Work
- An outer
if
condition is checked first. - If the outer condition is true, the inner
if
condition is evaluated. - If the outer condition is false, the inner condition is skipped.
Here’s the leap year example from your notes:
java
public static boolean isLeap(int year) {
if (year % 100 == 0) { // Outer if: Is it a century year?
if (year % 400 == 0) { // Inner if: Is it divisible by 400?
return true; // It's a leap year!
}
return false; // Not a leap year
} else if (year % 4 == 0) { // If not a century year, check divisibility by 4
return true; // It's a leap year!
}
return false; // Not a leap year
}
#
Why Indentation Matters
Notice how the code is indented? This makes it MUCH easier to see which if
belongs to which. Proper indentation is key for readability and debugging. Imagine trying to debug that mess without it! 😵💫
#Boolean Logical Operators: The Power of AND, OR, and NOT
These operato...

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