#7 most askedVery commonMediumExceptions

Checked vs unchecked exceptions

🏢 Asked in real interviews

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What's the difference between checked and unchecked exceptions? When should you throw each?

🔮 Predict the output

public class Main {
    static int parse(String s) {
        try {
            return Integer.parseInt(s);
        } catch (NumberFormatException e) {
            System.out.println("bad: " + s);
            return -1;
        }
    }
    public static void main(String[] args) {
        System.out.println(parse("42") + parse("4x2"));
    }
}

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