Practice›Java Fundamentals›Module 2. Selection & Iteration›2.1 If

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2.1 Selection — building the condition

Lesson

Building the condition

The parentheses of an if hold a boolean — any comparison (> < == !=) or a combination joined with && / ||, just like Module 1's logic.

Worked example

if (score >= 60) { ... }         // a comparison
if (n >= 1 && n <= 10) { ... }   // combined with &&

▶ Try it: run this, then change n — the condition n % 2 == 0 decides even vs odd.

int n = 7;
if (n % 2 == 0) {
    System.out.println("even");
} else {
    System.out.println("odd");
}

Which condition is true exactly when n is even?

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Which condition is true when x is between 1 and 10 inclusive?

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Match each condition to when it is true.

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Fill the blank so the condition is true exactly when n is negative.

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True or false?

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Type exactly what this program prints.

public class Main { public static void main(String[] a){
    int n = 12;
    if (n % 2 == 0 && n > 10) {
        System.out.println("big even");
    } else {
        System.out.println("other");
    }
}}

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