Exceptions are thrown with the help of the throw keyword. The throw keyword is used to indicate that an exception occurred.
throw is an object of any class that is derived from the Throwable class.
The Syntax is
throw throwableinstance //this is an instance of throwable
Example for throw statement
try
{
if( x < 0)
{
throw new NullPointerException();
}
}
catch(Exception e)
{
//statements
}
Example for throws statement
public class Example
{
public void exceptionExample()
{
try
{
// statements
check();
}
catch(Exception e)
{
//statements
}
}
// multiple exceptions separated by a comma
void check() throws NullPointerException,NegativeArraySizeException
{
if (x < 0)
throw new NullPointerException();
if (y < 0)
throw new NegativeArraySizeException();
}
}
Post a Comment