Java gooi Sleutelwoord
Voorbeeld
Gooi 'n uitsondering as ouderdom onder 18 is (druk "Toegang geweier"). As ouderdom 18 of ouer is, druk "Toegang verleen":
public class Main {
static void checkAge(int age) throws ArithmeticException {
if (age < 18) {
throw new ArithmeticException("Access denied - You must be at least 18 years old.");
}
else {
System.out.println("Access granted - You are old enough!");
}
}
public static void main(String[] args) {
checkAge(15); // Set age to 15 (which is below 18...)
}
}
Definisie en gebruik
Die throwssleutelwoord dui aan watter uitsonderingstipe deur 'n metode gegooi kan word.
Daar is baie uitsonderingstipes beskikbaar in Java: ArithmeticException, ClassNotFoundException, ArrayIndexOutOfBoundsException, SecurityException, ens.
Verskille tussen throwen throws:
| throw | throws |
|---|---|
| Used to throw an exception for a method | Used to indicate what exception type may be thrown by a method |
| Cannot throw multiple exceptions | Can declare multiple exceptions |
Syntax:
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Syntax:
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Verwante bladsye
Lees meer oor uitsonderings in ons Java Try..Catch Tutoriaal .