lancer une erreur java
throw new java.lang.Error("this is very bad");
throw new java.lang.RuntimeException("this is not quite as bad");
Happy Hamster
throw new java.lang.Error("this is very bad");
throw new java.lang.RuntimeException("this is not quite as bad");public class Main {
static void checkAge(int age) {
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...)
}
}//f a method does not handle a checked exception, the method must declare it using the throws keyword. The throws keyword appears at the end of a method's signature.
One can throw an exception, either a newly instantiated one or an exception that you just caught, by using the throw keyword.
Understand the difference between throws and throw keywords, throws is used to postpone the handling of a checked exception and throw is used to invoke an exception explicitly.
Example
import java.io.*;
public class className {
public void deposit(double amount) throws RemoteException {
// Method implementation
throw new RemoteException();
}
// Remainder of class definition
}
throw new java.lang.Error("this is very bad");
Generally JVM throws the exception and
we handle the exceptions by
using try catch block. But there are
situations where we have to throw
userdefined exceptions or runtime exceptions.
In such case we use throw keyword
to throw exception explicitly.
Syntax : throw throwableInstance;