Thread: Why it is showing error??

Can any one please explain me why the statement given below is showing error.

public static void main(String args[]){
try{
}
catch(IOException t){ // line 4
}
}

This code is showing error that, unreachable catch block. But this error wont be there if I am handling any other exception. The code given below is not showing any error at line 4.

public static void main(String args[]){
try{
}
catch(Exception t){ // line 4
}
}

Can any one please explain it to me why this is happening.

Thanks in advance..

I think it's because you don't have any code that might throw an IO exception within try
whereas Exception just covers everything