Java 'throws' Keyword Tutorial
The throws keyword is used to declare an exception. It gives an information to the programmer that there may occur an exception.
So, it is better for the programmer to provide the exception handling code so that normal flow can be maintained.
Usage
It is always used with method signature.
type method_name() throws exception_class_name {
//...
}Example
import java.io.IOException;
class Testthrows1 {
void m() throws IOException {
throw new IOException("device error"); //checked exception
}
void n() throws IOException {
m();
}
void p() {
try {
n();
} catch(Exception e) { System.out.println("exception handled"); }
}
public static void main(String args[]) {
Testthrows1 obj=new Testthrows1();
obj.p();
System.out.println("normal flow...");
}
}