Question

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");

}

Answer 1

Here we are trying open a file which is given by user so if it not exist in the system than it will open the default file in the catch block

So when we are trying open user given file if the file does not exist than it throws exception and controls comes to the catch block in the catch we will try to open the default file as user given file does not exist

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