Java:

In the code example below, explain the purpose of the catch block. (The last 4 lines of code.) FileInputStream inFileStream;

Scanner scanner;

scanner = new Scanner( System.in );

System.out.print("Enter filename to open: ");

String filename = scanner.next();

try {

InFileStream = new FileInputStream( filename );

} catch (Exception e) {

inFileStream = new FileInputStream("default.dat");

}