Exception to throw for missing input from scanner

Question

I wanted to make a program not crash when it doesn't get the input (String) it needs...

while(true){
try{
str = scan.nextLine();
}
catch(/*The exception I don't know and didn't find*/ e)
{
System.out.println("Missing Input. Please try again");
continue;
}
break;
}

Answer 1

Just use "catch(Exception e)". The word "Exception" is made to handle all possible exceptions that might occur.

Answer 2

you can also check if there is a next line, scanner.hasNextLine(). Returns a boolean if it has a next line

Answer 3

Thank you both!